I would just keep your posts. If a moderater locks/deletes that's their business. as far as a troubleshooting thread I think this would assist many people with legitimate problems with perfectly legal and yes, perfectly illegal copies.
In all honesty, no matter what the forum, or site you are visiting tolerates. I would never, ever, outright tell people you are using downloaded ISO's off the web, just a helpful tip. I don't care if you bought 40 copies of the original, the downloading is still Illegal unless they are YOUR files. That said, I'm not saying you're wrong to do it, plenty of pirated games work fine. But for the sake of yourself and the sanity of those around you (especially moderators on forums), if you question the legality of the game you have, don't bring it up period. If the people helping you can't figure out whats wrong, then assume you have a bad copy. You don't want to be throwing information and questions like "Hey interwebs, I just stole this game, can you help me make it work?"
So for future reference, always keep incriminating information to yourself, because the people on this forum could not care less about what you do outside of this forum as far as piracy, ripping models, and other copyright infringing business.
Not trying to be a d*ck, just trying to give you a heads up to make sure you don't get yourself into some trouble for no good reason other than some loose-lip syndrome.
and personally, I think 47 bucks is way too much for this game, Its good but... damn! lol, I understand why people download it all the time.
Best of luck with your issues.