Welcome aboard
Even if you could get it to run on that OS the processor and graphics probably would be up to it, so save your cash buy a new machine. If you're after something that could run SH3 then the secondhand market is your place, but if you want SH3 and then possibly 4 or 5, along with some other more modern games then plumping for something new is your best bet.
Whichever route, good luck
