chipmafia,
Go to:
http://kbserver.netgear.com/release_notes/d103100.asp
Right-click on the appropriate download button (North America or elsewhere). Save this file to your desktop.
Follow steps 1 thru 12 on this page.
Reboot your cable modem and router AFTER this is complete. Try connecting up your Vista PC and see if you're able to access the Internet.
- John