Guys, I just found that App2SD only works with this ROM if your partition is EXT2. EXT3 will not auto-mount.
Make sure your have the SD partitioned (2GB card --> 1138MB Fat32 Primary, 512MB EXT2 primary, 256MB Linux Swap primary). You can do this with the free partition wizard at
http://www.partitionwizard.com/ . Instructions in the Youtube below. Note that everything on the SD will be removed, so be sure to backup on some HDD. The 512MB is for the Apps; the 1138MB is for your and Android's files.
To enable a2sd after having flashed the ROM, go to market & download terminal emulator and run it.
Once in the terminal emulator type:
su
a2sd check
a2sd reinstall
Phone will reboot once.
After reboot, go back into the terminal app and type:
su
a2sd check
a2sd zipalign
a2sd cachesd
Phone will reboot again.
Now update and install as many apps as you want. Your phone will have around 120 MB of free space; always. All apps are on the SD...