Rendering troubles

My computer just won't render this. The hair just makes mental ray and maya endlessly crash. This pic was actually rendered outside maya, apparently if you right click the scene file, there's a "render" oprion there - whoa! I tried installing mental ray standalone, but i'm not good with stuff that has no user interface O_O. So within a few days I'm gonna need to install a 64 bit windows 7 and buy like another 4 gigs of RAM, I think that ought to take care of the issues.