Welcome to the forum, hituttle.
Now, I'll try to answer your question as best I can but, I'm an AMD/Intel kind of guy.
Now, I think SHIV will run on a Pentium 4 (believe I saw a post to that effect somewhere) but, I personally would recommend, as a minimum, an AMD or Intel Dual-Core processor with at least 4GB RAM and a dedicated graphics card with (again, at least) 512MB RAM. However, I think you'll end up paying more for a new PC than you would for a game console. When I first bought my rig (see my sig for the specs), it was an upper/mid-level gaming PC. Now, with all the newer models out there, it's probably in the lower mid-level range. I paid about $900.00 (U.S.) and that includes the 4GB of additional RAM that I purchased separately. The newer systems usually come with HD, 7.1 surround sound that's integrated into the MoBo so you shouldn't need to upgrade there. Nevertheless, I still bought and installed a dedicated sound card in order to free up even more system resources.
I have had absolutely no difficulties running the SHIV graphics on my system, save for some SS probs while in Truk Lagoon but, that's a totally different subject altogether.
Good luck in your endeavor.
