Thanks MC, yeah the FAT formatted stick was the issue, it didn't make any difference though.
I tried sticking it in another machine and it didn't show up in the bios there, so I didn't even attempt to boot into windows on that machine and see what could be done.
Waaait a minute, we have progress. Now it is showing in the BIOS, but not in the WIN 8 install, tried loading the driver from the Mobo disk and its still not showing up. Just when I thought I was getting somewhere!
Any ideas?
Edit: Now it is not showing in the BIOS again.