Note that I can boot into Ubuntu or FreeBSD by
1) use the Windows NT Pro tools to replace the Windows MBR
2) use Linux (Knoppix or another live CD) to make the desired partition bootable instead
I have to make sure a boot loader is in the Ubuntu partition /dev/sda2 before doing that! That was the case yesterday under my inital installation of 9.10 alpha 4, when I installed grub in /dev/sda2
Since then, I have updated the system, and grub 2 is in the MBR.