1. Ok, so I rooted my phone with UnrEVOked 3, I decided to hard reset, and recover with Ultimate Droid because it wasn't booting up before. So now my phone is working using Ultimate Droid. I want to know if there's a way to get my phone back to using the stock UNROOTED OTA.

and

2. My computer doesn't seem to recognize the phone itself anymore, only the sd card as a storage device. How do I fix this?

Help to both would be MUCH appreciated.