I'm having trouble with Photoshop...

I'm using Photoshop 7.0...a really old version I know, but I don't wanna go out and buy a new version. Well it seems to like to freeze a lot. I'll take a screenshot of it...
screenshot

It does this wen a new window has to pop up usually...such as creating a new document or opening one of the filter things or anything really...does anyone know why it's doing this?

I'm thinking it might be because of my laptops inability to run it because of vista or something, but im pretty sure I've used it just fine in the past on my lappy...maybe reinstalling would fix it?

Edit: Oh, forgot to mention that I can still use the program...like open File, Edit, etc. it just has everything grayed out.