ntl:Telewest / Virgin Media doesn't support Windows Vista, yet.
http://www.cableforum.co.uk/board/sh...php?t=33607187
However, if you switch to using ethernet instead of USB, then you won't have to worry about USB drivers, or Vista support for USB, etc.
http://homepage.ntlworld.com/robin.d...mtips/usb.html
EDIT:
Oh, but if you're having connection problems, then yes, phone them up anyway. I'd still recommend using ethernet though. Much better than USB.