I'm not sure what your specific problem is. The best thing to do is to check all the parts. It's a pretty simple rig. Start by pulling back the vinyl headliner to expose the glides and height adjusments. To get the headliner back open the sunroof about halfway and then gently pry on the front edge of the vinyl liner. There are about 5 snaps that should pop as you pry down on the liner. Then the liner should slide back. With the liner out of the way you can check for broken guides and adjust them.
To adjust I take the crank off and slide the roof with my hand. It should slide easily with the crank off. Push the roof all the way forward. If the rear end of the roof does not come up all the way, loosen the rear guides, push the rear of the roof up and retighten the guides.(the adjustment nuts are fairly obvious if you are looking at the guides). You may have to mess around a bit to get it just right.

If the roof opens and closes normally without the crank, try reinstalling the crank. Make sure it is cranked all the way open or closed (match with the roof postition) because many people have said the crank has a stop, but I have never noticed a stop on mine. If it still does not work I would wonder about the condtion of the cables or the crank gear.