I was looking at buying the Dell 2400 Desktop, Compaq SR1500NX or building a computer. My primmary use is going to be MP3 and internet. I am looking at staying at or below $400. Which would be the best for my money? Compaq 2.0Ghz Amd 256 RAM 80 GB CD-RW/DVD-ROM combo drive $390 Dell 2.6Ghz Celeron 256 RAM 80 GB CD-RW $380 Also which is better AMD or Celeron?