Yeesh, holy crap hz! heh Let's start out simple.
1) try to uninstall and reinstall the game. Make sure you download the demo patch to go along with it, too. (The Hunt map, this has the included patch) Use this:
http://mohaa.xgshosting.com/joe/installguide.htm
2) Post your system specs:
Processor type & speed
RAM type & speed
Video card type, amount of RAM, & driver version
Sound card & driver version
hard drive freespace/total space
Operating System