This one will handle C2k4 and homework easily and it's about 150 pounds cheaper- this is assuming you don't need a DVD burner and you're not going to play any high-end games on it
AMD Athlon XP Processor 2400+
? 55.12
Samsung SpinPoint P80 SP0802N - Hard drive - 80 GB - internal - 3.5
? 50.25
Nvidia GeForce 4 MX440
? 32.82
AOpen AK79D-400VN - Mainboard - ATX - nForce2 Ultra 400 - Socket A - LAN EN, Fast EN - IDE
? 48.72
Adtec 184PIN 512MB DDR UDIMM PC2700
? 79.66
AOpen Combo Drive 52x32x52/16x, Chameleon Retail Kit (extra silver and black bezel)
? 35.20
Jeantech Blue ATX MIDI Tower +300W PSU
? 45.84
?347.61