Hi Nostromo,
this may be of interest: Virgin Frequent Flying Club have linked up with HHilton Honors club. I have received an email fron Virgin that lets me join the hilton club as a gold member. Automatic room upgrade if available and virgin plus hilton points each stay.
We are staying at the Gatwick Hilton at xmas before flying over so hopefuuly an upgrade to start the holiday off plus extra points.
Let us know how you get on because US Air seem to be getting rave reviews.
andrew