Correct me if I'm wrong, but don't you need 2 SATA drives to set up a RAID?
I recently upgraded my kids pc, and just installed a single 120GB SATA drive, couldn't see the need for RAID.
I also installed a Radeon 9800 pro 128mb (256bit) from
overclockers uk, other places worth looking are
planetmicro.co.uk and
novatech dabs
Although things have changed slightly since I upgraded (mainly CPU availability and Newer graphics cards (expensive ones)), I went for
MOB: ASUS A7N-8XE DELUXE
CPU: AMD 2800+
RAM: 512mb Kingston
VGA: Radeon 9800 pro 128mb
DVD: NEC 3500a DVD dual layer DVDR/RW