I got a Belkin FD7050v4 usb adapter.
I`m using this adapter in a x64 version of windows 7. It never worked before in Vista x64, but I tried it the other day and hey presto it worked!!. Must have downloaded an updated version of the drivers for my particular release. I tried it in Windows 7 and it didn`t work, just came up with an error, so I ran the combatibilty wizard for the install program, chose Vista and then wow, it worked. I was so chuffed, I installed Windows 7 on a nice big hard drive so I can really test it by shoving every program I got onto it. Along with my music and photos, and everything else, its the best way to test it.