I have had vista for approximately 1 year. Suddenly I am getting application errors; ie desktop icos i've created to webs won't open, all email links received will not open. I keep getting "application not found." I've done all the appropriate hardware tests and everything fine, so I assume it's a software problem, which is what most problems end up being with windows in my experience. I've also tried reformatting the hard drive, but I guess Vista won't let you do that?????

Please help before I shoot my computer and go buy a MAC!