When I try to boot the Snow Leopard Installation Disk it crashes. I tried everything but I just can't get it to work.

Here's a screenshot of the screen:

My computer specs:
MB: MSI K8N-Neo (MS 7030)
chipset: nforce3 250
Cpu: AMD Athlon 64 2800+
Gpu: saphire x1650 pro AGP
Ram: 2x512 MB Apacer 400 MHz

Any help would really be appreciated.