Disney, OK has some great places for wheeling. I have never driven any of it myself, but have been down there when stuff is going on. There is everything from dusty trails to stuff that will tear your truck apart. Here are a couple of good links. The first one is off an FJ site, but it has got a lot of information in it: Linky

This site has pics of a little more serious wheelin' going on but give you a good idea of how much trouble you can get in if you want to. Hard Wheelin

If you Google Disney, OK and wheelin or 4x4, etc., you will find plenty of other info.