Thanks for responding so fast.
I have not had the pleasure of looking at a OGL in a store, so I do not know exaclty what the system mechanics are. By looking at the previews of the the other OGL's the system seems to be a variation of d20 Modern. If the Pocket Players Manual is D&D is it built in the same d20 Modern method or is it simply D&D 3.5?
If it is D&D 3.5, how can that be worked into the other OGL's if it is a different system.
Of course I may be completly clueless about this because I have not actually seen the books.