Thank you for all the information and suggestions Jack. I like the idea of using the metal t slots every 6 inches or so. When I got to work this morning I looked at the MDF toable top an it is 1" thick, not thick enought to slot (in my opion) but would work perfect with the addition of the metal slots. I also thought about the idea of using the t nuts like in the picture. We use them from time to time and I think that would be the best cost wise at this time.

Thanks,
Micheal