here's for CM7:
google aps for CM7
0. Backup apps with titanium backup (here https://market.android.com/details?i...umBackup&hl=en)
1.Download superoneclick (here http://forum.x...
with go launcher ex i was referring to install it from the market after you finish. (it works way better than CM7s' ADW)
nr3 no, you don't need to disconnect. that's how it was written by stewi21 (after his tutorial I installed CM7 also)
after you root the phone you should be able to uninstall some aps you can't uninstall otherwise.
but if you go to the trouble of rooting your phone than you should try CM7 (with go launcher ex):...
I think it may be a problem with your card. Try taking it out and clean it (also it's slot). And if this will not fix your problem try to switch your card with someone for 1-2 days to see it the problem occurs again.
you want to install a custom rom or just delete all aps?