For some reason, Steam doesn't want to decide that I have this game installed, despite downloading it several times. Google is telling me that I am missing several manifest files, so I would appreciate it if someone could upload them so I can throw them in my steam folder.
Well, I think I got this fixed. I grabbed a pirated copy from my neighbour, installed that, copied over the file into my steam directory, then deleted everything but the steam.exe and my games folder. That made steam re-download everything from scratch, so now Steam realises that I have it installed.