Hey I keep getting BSOD errors while playing games or surfing.
Computer Spec:
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.101209-1647)
Motherboard: Abit AX78
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: AMD Sempron(tm) Dual Core Processor 2000, MMX, 3DNow (2 CPUs), ~2.2GHz
Memory: 2048MB RAM
DirectX Version: DirectX 9.0c (4.09.0000.0904)
Graphic card: ATI Radeon X1950 Pro 512.0 MB

Rather old computer. Check your memory. This info might help:
http://www.techspot.com/vb/topic51365.html

Ok so i did a memtest today, stopped at 9 passes. I got 2025 errors and 0 ecc errors, this can't be good?

Replace the memory. If there are 2 memory sticks, try using just one