Hey harvezter,

Well first of all you might want to search the forum for some threads about pc configs. But since you want a dual set up they probably won't help you much so here's my opinion:

1. Dual processors are great. I would sugget 2 Athlon 2600+
2. Don't by a pc from a brand. Buy all the parts yourself and build it or if you can't build it take it to a local pc retailer and they will do it for you. This will save you money and you will be able to chosse every single component that you are buying.
3. 2 gigs of memory is awesome but not really necessary. I have 1 gig and that suits me nicely.
4. Can't really help you with a motherboard but go to vendor's websites like gigabyte, asus and so on and look around.

5. if you have extra cash i would suggest an Opreton (dual). They are the new AMD processors and are 64 bit so they are futureproof. they are still compatible with 32 bit.

hope this helps.

Alex