Ran it on a P4-1.6 with 1024MB and a 32MB videocard no problem.
Since upgraded to a 64MB videocard and now a 128MB card.
You don't WANT to know my harddisk size. Hack, I don't know what the combined total is, but it's somewhere around 140GB spread over 6 drives.
and related stuff take up about 25-30GB of that.