Have you plugged in your phone prior to now?

If so, your phone may already have a old driver for it, and you need to uninstall the old one. *maybe*(been awhile, but that's how I remember to bypass that possibly)

 

Get the new drivers here.
Directory Listing of //SBF Files and Update files/SBF File/

Also I have heard of some people clicking on the first line in the RSDLite program under model and that brought up your phone.

 

just got this to work today. you need the correct/current drivers.......

worked fine after that (getting the phone to be recognized required me to click it in the system tray)

good luck!

 

If you're running Vista or Windows 7, you might need to click on RSD Lite and choose "run as administrator".