Thanks Hectic, yes, your right, I should have said what I want to use it with. BtHub2 and/or a Netgear router.
When I had my netgear running/installed on my main PC and looked for wireless networks using my other PC, I was getting a stronger signal from my neighbours BTHub (70%)than I was getting from my netgear 50%ish, but then if my neighbours hub was closer thats no real surprise. I decided to try the Hub2 and now I'm getting a stronger signal 80%, just by changing the router.
Thats why I wanted a good network card but if the USB device works better, thats good enough for me, that does help and thanks for the link.
It was the Netgear DG834PN I was using BTW