I Want A New PC !!!

I don't know what is going on with my computer. Since I downloaded and installed this Yahoo Messenger for Vista, it has been so slow. I deleted all the unnecessary files already and other stuff that I don't use, but it is still running slow. It keeps on either crashing or freezing. Darn! This is not even three years old. I want a new one!!! Honey, hope you can read this. :D