problem with upgrading windows xp

[memory]

I started having problems with my internet. It quit working and no matter what I tried nothing worked. I am on a wireless connection. I started getting all these firewall corfirmation saying something about Generic Host Process, LSA Shell Version, and Windows Explorer. Right before this I installed Yahoo Jukebox and SRS Audio Sandbox. I just wonder if it has something to do with those. So I thought I try to repair Windows XP pro. Well I put the cd in and clicked on install windows, then it usually gives me an option whether to repair, upgrade or new installation. Well for some reason there was no repair option so I chose upgrade. Well everything was going fine until when it was installing devices, it asked me for the Nvidia driver disk. Before I could get done with that, it continued on. After that everything was ok but when it restarted, after the screen where it says Windows XP, I blue error screen flashed on the screen then restarted. It does not give you enough time to read what it says. Now I have to go into safe mode which I am in right now. Could someone help me out?

 

[memory]

Well, I got the problem with Windows starting up fixed. I had to reinstall the drivers for the video card.

I am still having other problems. I still can not connect to the internet. I connect wirelessly using a Linksys adapter. When I was in safe mode, the internet worked. Since the internet worked in safe mode, I assume that the adapter is not bad. The computer that is connected through the router works fine. I may just do a reinstall Windows. Is there something I can do to figure out what is wrong?