hmmm...well it didn't work for with my hardware for some reason. I'll post all that I know about my system and maybe someone will spot out the problem...the following was all I could gather from the original WeTab Os that came preinstalled:

/etc/X11/xorg.conf.d/99-calibration.conf

ection "InputClass"
Identifier "default"
Driver "evdev"
EndSection

Section "InputClass"
Identifier "calibration"
MatchProduct "eGalax Inc. USB TouchController"
Option "Calibration" "-5 4100 59 4100"
EndSection


lsusb gives the following output:

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 011: ID 12d1:1404 Huawei Technologies Co., Ltd.
Bus 002 Device 007: ID 04f2:b213 Chicony Electronics Co., Ltd
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 0eef:72a1 D-WAV Scientific Co., Ltd
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Note the 2nd record from the bottom: Bus 003 Device 002: ID 0eef:72a1 D-WAV Scientific Co., Ltd. Most posts mention that there should also exist 'egalax...' at the end of the given string, not sure if that matters.

Futhermore looking at xinput -list output we get the following:

-Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ eGalax Inc. USB TouchController id=11 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ USB 2.0 Camera id=12 [slave keyboard (3)]
↳ Asus Laptop extra buttons id=13 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=14 [slave keyboard (3)]
↳ USB Keyboard id=9 [slave keyboard (3)]
↳ USB Keyboard id=10 [slave keyboard (3)]

For more info on the eGalax device we issue:

xinput -list-props 11

Device 'eGalax Inc. USB TouchController':
Device Enabled (132): 1
Device Accel Profile (252): 0
Device Accel Constant Deceleration (253): 1.000000
Device Accel Adaptive Deceleration (255): 1.000000
Device Accel Velocity Scaling (256): 10.000000
Evdev Reopen Attempts (248): 10
Evdev Axis Inversion (257): 0, 0
Evdev Axis Calibration (258): -5, 4100, 59, 4100
Evdev Axes Swap (259): 0
Axis Labels (260): "Abs X" (250), "Abs Y" (251), "None" (0), "None" (0), "None" (0)
Button Labels (261): "Button Unknown" (249), "Button Unknown" (249), "Button Unknown" (249), "Button Wheel Up" (136), "Button Wheel Down" (137)
Evdev Middle Button Emulation (262): 2
Evdev Middle Button Timeout (263): 50
Evdev Wheel Emulation (264): 0
Evdev Wheel Emulation Axes (265): 0, 0, 4, 5
Evdev Wheel Emulation Inertia (266): 10
Evdev Wheel Emulation Timeout (267): 200
Evdev Wheel Emulation Button (268): 4
Evdev Drag Lock Buttons (269): 0

Ok let's what xorg has to say about all this:

cat /var/log/Xorg.0.log |grep -i egalax

[ 11.935] (II) config/udev: Adding input device eGalax Inc. USB TouchController (/dev/input/event6)
[ 11.935] (**) eGalax Inc. USB TouchController: Applying InputClass "default"
[ 11.935] (**) eGalax Inc. USB TouchController: Applying InputClass "calibration"
[ 11.935] (**) eGalax Inc. USB TouchController: always reports core events
[ 11.935] (**) eGalax Inc. USB TouchController: Device: "/dev/input/event6"
[ 11.940] (II) eGalax Inc. USB TouchController: Found absolute axes
[ 11.940] (II) eGalax Inc. USB TouchController: Found x and y absolute axes
[ 11.940] (II) eGalax Inc. USB TouchController: Found absolute touchscreen
[ 11.940] (II) eGalax Inc. USB TouchController: Configuring as touchscreen
[ 11.940] (**) eGalax Inc. USB TouchController: YAxisMapping: buttons 4 and 5
[ 11.940] (**) eGalax Inc. USB TouchController: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[ 11.940] (II) XINPUT: Adding extended input device "eGalax Inc. USB TouchController" (type: TOUCHSCREEN)
[ 11.940] (II) eGalax Inc. USB TouchController: initialized for absolute axes.
[ 11.941] (II) config/udev: Adding input device eGalax Inc. USB TouchController (/dev/input/mouse0)
[ 11.941] (**) eGalax Inc. USB TouchController: Applying InputClass "default"
[ 11.941] (**) eGalax Inc. USB TouchController: Applying InputClass "calibration"
[ 11.941] (**) eGalax Inc. USB TouchController: always reports core events
[ 11.941] (**) eGalax Inc. USB TouchController: Device: "/dev/input/mouse0"
[ 11.950] (EE) PreInit returned NULL for "eGalax Inc. USB TouchController"
[ 2400.623] (II) eGalax Inc. USB TouchController: Device reopened after 1 attempts.
[ 3907.858] (II) config/udev: removing device eGalax Inc. USB TouchController
[ 3907.860] (II) eGalax Inc. USB TouchController: Close
[ 3990.426] (II) config/udev: Adding input device eGalax Inc. USB TouchController (/dev/input/mouse0)
[ 3990.426] (**) eGalax Inc. USB TouchController: Applying InputClass "default"
[ 3990.426] (**) eGalax Inc. USB TouchController: Applying InputClass "calibration"
[ 3990.426] (**) eGalax Inc. USB TouchController: always reports core events
[ 3990.426] (**) eGalax Inc. USB TouchController: Device: "/dev/input/mouse0"
[ 3990.437] (EE) PreInit returned NULL for "eGalax Inc. USB TouchController"
[ 3990.437] (II) config/udev: Adding input device eGalax Inc. USB TouchController (/dev/input/event6)
[ 3990.437] (**) eGalax Inc. USB TouchController: Applying InputClass "default"
[ 3990.437] (**) eGalax Inc. USB TouchController: Applying InputClass "calibration"
[ 3990.437] (**) eGalax Inc. USB TouchController: always reports core events
[ 3990.437] (**) eGalax Inc. USB TouchController: Device: "/dev/input/event6"
[ 3990.440] (II) eGalax Inc. USB TouchController: Found absolute axes
[ 3990.440] (II) eGalax Inc. USB TouchController: Found x and y absolute axes
[ 3990.440] (II) eGalax Inc. USB TouchController: Found absolute touchscreen
[ 3990.440] (II) eGalax Inc. USB TouchController: Configuring as touchscreen
[ 3990.440] (**) eGalax Inc. USB TouchController: YAxisMapping: buttons 4 and 5
[ 3990.440] (**) eGalax Inc. USB TouchController: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[ 3990.440] (II) XINPUT: Adding extended input device "eGalax Inc. USB TouchController" (type: TOUCHSCREEN)
[ 3990.440] (II) eGalax Inc. USB TouchController: initialized for absolute axes.

finally for good measure I had a look at the loaded modules:
lsmod

Module Size Used by
hid_egalax 2819 0
ath3k 1869 0
fuse 48766 2
uvcvideo 46234 0
pega_ext 2136 0
i2c_dev 4425 0
nls_utf8 989 0
ath9k 59197 0
ath9k_common 4376 1 ath9k
option 12705 0
ath9k_hw 260533 2 ath9k,ath9k_common
ath 7006 2 ath9k,ath9k_hw
usb_wwan 8028 1 option
mac80211 182073 2 ath9k,ath9k_common
usbserial 27143 2 option,usb_wwan
i2c_i801 7159 0
joydev 7182 0
cfg80211 113917 4 ath9k,ath9k_common,ath,mac80211
asus_laptop 11967 0
crystalhd 75313 0
battery 8542 0
sparse_keymap 2393 1 asus_laptop

hid_egalax caught my eye and i ran modinfo

filename: /lib/modules/2.6.35.3-10341.1.4-wetab/kernel/drivers/hid/hid-egalax.ko
license: GPL
description: eGalax dual-touch panel
author: Stephane Chatty
alias: hid:b0003v00000EEFp000072A1
alias: hid:b0003v00000EEFp0000726B
alias: hid:b0003v00000EEFp0000480D
depends:
vermagic: 2.6.35.3-10341.1.4-wetab SMP preempt mod_unload PENTIUMM 


On Ubuntu the lsmod does not show hid_egalax being loaded. Also the Xorg.0.log on Ubuntu shows the touchscreen being identified as a Tablet.