If they are the stock bolts, then like Fred1 said. Torx bolt on top, rectangular threaded nuts under the tub rail. You should have a set of torx head sockets by now anyway. If not, it's time to get some.
If the hardtop has been on for awhile, the rear portion (under the side windows) may be stuck on the weather stripping. I find it easier to break it free by pushing up on the front of the top (near the windshield latches) which provides easy leverage to break the top free from the tub. I found this method by trial and error. I used to get in the back of the Jeep and push up. Way easier to do it from the front.
Good luck, and happy topless-ness!