First of all, I highly approve of Stargate games!

If you're interested in being true to the movie and/or show, here are the glyphs that appear on Earth's Stargate: http://en.wikipedia.org/wiki/Stargat...ymbols_at_Giza

If you scroll down a bit, you can see the glyphs on the Atlantis gate.

Also, the "water" is more of a silvery-gray color. GamerPrinter's texture looks very nice, except for the color. I'm not sure if there in an analogue to it in Photoshop or the other graphic programs, but I once got very nice results from After Effects' Fractalize effect.