((((((((((((( Simon ))))))))))))))
I'm sorry you are feeling so crappy.
Computer problems drive me mad too sometimes. Especially because an efficient computer is vital when it comes to my studies so you are definitely not alone in this regard. And I have a habit of bottling my anger up until it finally bursts out so umm... lets say I have to change mouses and keyboards more often than an average computer user
A little advice for future - when you buy a program, check out a free trial first (software companies often offer them to customers, you have to check on their website). If there is no trial available try to find the program via emule of torrent (you can find nearly everything this way). Install it and make sure it works. When you buy a legal version you can just remove it.This way you are sure it will work with your computer.
Take care