RAM plz

I found out that my two Geil RAM modules and my motherboard didn't do well together, so I'm looking for some decent new memory that goes well with my 3.0 GHz on an ASUS P4C800-E Deluxe and my 6600 GT. When it comes to hardware in a complete newbie. I have no idea what to look for in RAM. Any suggestions would be appreciated.

Kingstone ValueRAM, maybe? I wouldn't go for something too expensive, nor bother with registered RAM. Just look at the features, and maybe get the second cheapest with the features you want. Of course, this is an oversimplification, but I can't help you more.