I've tried googling slayer autoinstall. I downloaded from torrent but none of the exe files that I've gotten hold of works .. Should be a nice person who would help with an exe file or iso that works. Thanks in advance.

Slayer's works in the Xbox not in the PC. It works on a hard modded Xbox and not a softmod.

so far I am with. But the exe file should probably be burned onto a CD before installing

You should have an ISO file. Burn that to CD/DVD.