No. I have vista and i was suprised to find that when opening the super clinet, you have to first extract the .rar files to anywhere (desktop recommended) and then you just run them through the folders that you extracted them to. Dont open the client with winrar, just open it through the folder after extracting. All other clients i have must be opened with winrar but this one was different. You still need to extract it with winrar though..
hope that helps
add my xfire and i'll send you a video or something on how i got mine working on vista
xfire = Andyzietlow