Found this at alldroid. It should fix your wifi
This will be included in v1.3 but for now, here's your fix.
1. Reboot into recovery.
2. mount system and data, then remove WifiTether.apk from /system/app and the android.tether folder from /data/data (rm -r /data/data/android.tether works for directories that aren't empty)
3. Push the linked WifiTether.apk into /system/app
4. Reboot
5. Open Wifi Tether app and go! (that's right, no need for reboot)
NOTE: EVERYTHING WORKS!!! WEP, Access Control...EVERYTHING!
You're welcome.
EDIT: Whoops forgot to attach lol.
http://downloads.sholes.info/WifiTether.apk