Yes and No they didn't want to do it but I bitched that the mobo died and since it wasn't covered by warranty no RMA was available. It took about a hour of jaw-jacking to someone that I could barely understand ( harsh accent) to drive that home but in the end I got a new Key.
Ok then, that kinda answers my question. If it took you quite some time to get them to aprove it then my original concerns still stand and I've got yet another reason for avoiding the upgrade to Vista on my main rigs.