crisser,
When you connect your iPhone to your computer and open iTunes, does iTunes see the iPhone? If not, try these steps here:
iPhone and iPod touch: How to restart the Apple Mobile Device Service (AMDS) on Windows XP and Vista
http://support.apple.com/kb/TS1567
iPhone: Troubleshooting USB connections
http://support.apple.com/kb/TS1286
If that still does not resolve the issue, does rebooting the computer get iTunes to see the iPhone?
Another step you can try is while the iPhone is connected to the computer, press and hold down the sleep/wake button (at the top) and the Home button (bottom) until the iPhone restarts. When the iPhone is powering back on, release the sleep/wake button, but continue to hold down the Home button. Does iTunes see the iPhone then?
Once iTunes recognizes the iPhone, you should try restoring the iPhone from iTunes. If the restore fails, and the above steps have been exhausted, here is another good article to follow:
Update and restore error messages on iPhone and iPod touch
http://support.apple.com/kb/TS1275
Hope this helps,
Raleigh