My new computer is finally up and running. After a faulty hard drive cable was removed, it appears to be smooth sailling from here. I'll still have some things to fix here and there – but it should be fine in the end.

In case you want to know what my computer is running:
AMD Athlon 64 3000+ Socket 939
MSI K8N Neo2 Platinum
2 x 256MB DDR266 Apacer RAM
Galaxy GeForce 6600GT 2.0ns

It's the bare minimum for a powerful computer. Just you wait and see what kind of things I'll put inside. *grins evilly*