Bah stupid Vista...I've come to a number of problems but the ones that stick out are Defrag no longer shows you anything...Just the words Defragging now...You don't know how long it will take.
Then tonight I wanted to turn off the internet for a sec so I go to network, click disable like I used to on XP and instead of just greying it out...Vista removed the whole option meaning I couldn't re-enable.
After trying fixes I had to use system restore which worked thankfully.
Anyway I just suggest not getting it for a long time. If ever. DX 10 is not worth it