If I, or even should I take these two products together. I know there is Creatine in Muscle Synergy. Would that be too much creatine?

Your best bet for fastest gains is to do the loading cycle with Creatine Select for 5 days, then start Muscle Synergy. You can still use one or two scoops of Creatine Select per day with Muscle Synergy but the amount of creatine in Muscle Synergy alone is probably adequate. Personally, during a gaining phase I'd use both though.

Mike, Synergy combined with Creatine plus phosphates is actually one of the advanced stacks from Beverly's Supplement catalog. They reccomend this for hard gainers or those that have hit a plateau. Here is the link, its at the bottom of page 3 on the left.
http://www.beverlyinternational.net/productpdfs/Muscle_Synergy.pdf

Whoops! Looks like Roger beat me to the punch.

Thanks. One other question. Is there a shelf life for creatine or glutamine?

Re: Shelf life - General rule of thumb is 2 years after the manufacturing date. However, I've used product much older than that - as long as it was stored properly, looked and smelled like it should (etc.). When in doubt, though, stick with the 'rule of thumb' above.