Comment 38 for bug 295796

I'm using 9.10 karmic koala on a Samsung Netbook. I'd like to make my GSM connection available via wifi so I do need two autoconnects - one via the GSM (USB or Bluettooth) and one via WIFI (adhoc). I do get an autoconnect for the GSM via USB. For the second connection I have to manually start with connect to hidden network. Also the DHCP configuration is complaining - it seems the order of things is such that the dhcp server starts before the ip addresses for Bluetooth and WLan get assigned.
I am confused on what the proper method is to get this working. One comment above mentions modifying /etc/network/interfaces to be the "old" method of doing things. So what is the "new" method then?