so what's the question then?
Either the 530 or Vostro 200 (same machine but Vostro is business oriented)
I've got the Vostro 200 and it's a good PC, I got 2Ghz dual core, 2Gb ram, 320gb H/D, 256 graphics and a 19" monitor for £380.....
These machines have 2 PCI slots, 1x PCI-E x1 (small slot) and 1x PCI-E x10 graphics slot, so not many slots to add lots of extras.... if you get firewire and a tv card you're full!