Yeah missed a zero. Anyway i used 7-Zip and still nothing. Should i re-download the game?I'm assuming you mean the AMD QC-4000?
Your system more than meets the requirements needed to run MotH. Now the question that remains is what program did you use to extract the RAR with? If you used Windows built-in software, WinRAR or WinZip, I would recommend using 7-Zip. The instructions for extracting with it can be found here.