Hi, I have recently started having problems with the F5D7050B (version 3 according to belkin) network adapter. On installation, it asks for a file called rt73.sys - this is on the cd, and also on the c: drive, but no matter where i direct it, windows says that it cannot find the file. I have not installed the belkin software because it also causes probs with zero config on another computer. Other dongles i have do not require this file and work fine - can somebody help me, or will it have to become an expensive bookmark??