Why O Why did you install Vista when very little good has been said about it. (I would not wish it on my worst enemy)
Even Microsoft recognises it’s a disaster, (Although they won’t admit it publicly) which is why Windows 7 was bought forward.
If you had waited till October you could have Windows 7, which is an absolute beauty in comparison. (The Beta version of Windows 7 made the final release of Vista look poor)
Sorry if I don’t seem sympathetic, (I do understand what you are going through) but all the warnings were out there.
You could try to see if the dealer will do a swap for Windows 7. (Make an excuse for incompatibility problems or similar)
Best thing I can suggest (If you can’t change it) is pop over to the various Vista forums, as they should be able to help you get it to some form of normality.
Best of luck

Bill