Well, after going through some stuff with my PC, (Which is 4 yrs old) I think im going to go Vista, but not without upgrading my PC. Heres my current setup:

AMD Athlon 64 3500+
1.5 gbs Ram
Radeon X600 Video card
258GB HDD

What should I upgrade? I know im def getting more RAM. But i have soe question.

1. Is it worth going to vista?
2. Is my Mobo good, or should I get a new one?
3. Anything else?

I basically want to do a big update of everything. Problem is, I've been out of the computer scene for a few years. So these are probably really noob questions,but any help would be greatly appreciated.