eightball, take a look at the links above. They are on my personal website and I am sure you found them in your search for info but just incase I will link them again for you. As Kevin said using glass and acrlic or plexiglass will give you a challenge on how to properly bond the two different types of materals. Select the one you feel best working with and use it for the entire tank.
My tanks where done with stock 20gal aquariums that I purchased at the local LFS
so I did not have to custom buld a tank to fit but If I did then it would have been a bit easier. With using a stock tank you have to some times rase and brace the tank so it fits in the picture tube window.
Please post photos when you have finished your project.