First you don't want a motherboard that only supports DDR3 ram right now, for the price it isn't worth it yet.
Here is a good choice for a motherboard:
MBASP5Q-E - Netplus Micro Computers
This is the only decent ram I could find:
It's only a 2Gb kit, I think you should get 4Gb though since you are using Vista 64 bit. So I would buy 2 sets of those, because they have good timings. Or you could go with this 4Gb set, but the timings are awful:
Don't get a Gigabyte psu either, plus you wouldn't need all that power: