I'm willing to bet that you'll pick it up just fine. Like BA said, definitely take it slow in the park because things are MUCH different than they were when you were riding, but I bet you'll be going big again sometime your first year back.
I started riding when I was 18 and did it for about 4 years until I stopped for a few years because of problems with my legs. I picked it back up again after about 4 or 5 years off and felt like it took about 1 run to get back to where I was when I was 22. I was really suprised how easy it was to get the feel back.
It will obviously take you longer because of the much longer time off, your age, and how different the equipment is, but I think you'll be shredding in no time....especially if you're in good shape. Plus, I think you'll find that the equipment is MUCH better than it was in the early 90's.