Ok, so ya'll finally convinced me to go with a pen-m rather than a desktop p4.

Now that thats outta the way, what brands do yall recommend.

I preferably want one that I can customize (like dell) rather than a pre-configured.

Also what is a good GPU for a laptop. I want good 3d-Gaming. The top four seem to be ATI's x600 and x700, and nvidia's is the 6800 Ultra and 7800.