I have a stuck wheel bolt on the back wheel, it its the security one, with a key you insert into it, a couple of the teeth have come off, and i dare not put to much force on it.

Any suggestions?

...was at NTB a couple of weeks ago when a guy with a Jetta had the same problem. They drilled out the lock, threaded in a removal bolt and it came right out - charged the guy nothing since he was getting new tires....