Windows Vista Windows Vista: problems with wireless

Hello,
I am running Windows Vista on a Gateway computer. I have been using a wireless USB stick for internet access. A few times I have had a blue screen error message with "driver ... not_less_but_equal" or something like that. However this happened 3 times within about 5 minutes and the last time I rebooted I lose all internet access. When I tried to search for networks it said something like "... failed to load" -- it was in a dialogue box from the lower right hand corner of my screen. None of the self diagnostics show any results and I need internet access for more info online (obviously I am on another computer now). One other thing is when I look at the network settings and try to change any of them, the screen freezes and I need to use task manager to close it.
If anyone has any ideas why this happened or the best thing I can do to try to fix it without internet access, please let me know. There was no disk that came with my computer. If there is a way to download drivers on a jump disc, please let me know or if anyone can upload some of them here so I can download them that would be great.
If this may be another problem, please let me know as well.
Thank you!
-David