Twinklez, We usually dive out of Marietta Landing at the south end of the lake. It's a bit of a hike to the water over some rocks, but there is a nice little beach/cove that is great to dive out of. You can also shore dive from the boat ramp if there isn't any boats putting in or taking out. One good thing is, Hot Showers! Camping is 10 or 12 bucks with electricity, I just can't remember exactly how much. I think it's a little more during the Spring/Summer/Fall, cheaper in the off months. No air fills that I know of, Timeliner or Texdiveguy may know more about that one. The lake is just south of Ardmore Ok, which is about 30 minutes north of the Texas line on 35.
JcChapman3, Illini Fan, and myself are planning on going up next weekend (4/28) and of course, anybody is welcome to join us!