Hello..

I'm new in this board and I'm totally need your help !!...
I bought my computer almost 4 years ago, it's a Sony VAIO PC comes with Windows ME. Two years ago I had my uncle to reformat my computer into Windows 2000. But now I had virus in my computer (I have anti virus already), so I decided to reformat my computer again using what comes with the original computer (using Windows ME). My question is: 1. How do I do it?
2. I would like to upgrade from ME to XP, how I do it?

Thank you very much for your help...