I use to have Windows XP that I used Garmin Topo 2008 to talk to my GPS, download waypoints from computer to gps and gps to computer. For that to work I had to buy a serial/usb adapter so I got one of the Belkin adapters. Now that I have Windows 7 there is not a driver for the Belkin serial/usb adapter. I bought a different adapter for $20 that is compatible for Windows 7. If anybody else has that problem just buy a new adapter. Can't wait until I have to go to a new version of Windows gun).