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.

>>4
I'm sick of this "just get more ram!" bullshit. My 286 did almost as much functionality-wise as my current multi-ghz machine. Yeah, really. Sure, there was no multi-tasking, but I did the mostly the same things as I do today.
Hello, fuckers, just because you can eat ram doesn't mean you should. It costs money and also reduces the number of programs you can run.
I can see it now: in another ten years programs will have minimum footprint of 1GB, but they'll just do more of the same