Canyon-
Thanks for the info. I come from the Piney Woods in East TX, so my knowledge of sandy soils, doesn't really apply out here :/
I used some of the soil survey information that was suggested by other posters, and have pretty much developed a pretty good understanding of what the soil is like. I had previously purchased a book on xeriscapes, so I will pull it out and start reading. I had come to the conclusion that I would have to consistently alter the soil with peat moss, and had already determined that a raised bed would be required. That said, the previous owner had a bermuda lawn (it is in terrible shape, but I'm trying to fix that). It looks like the drainage of the soil is very slow, and the damage from wind erosion is quite severe, which will be the main factors on the way the landscape takes shape, I reckon.
Anyway, I really appreciate the help. I have settled on mexican redbud and escarpment live oak to supplement the yard with some foliage. the South side of my front yard is bordered with some sprawling juniper. I have cut that back, but it provides some really good habitat and windbreak for the yard, so I do not want to remove it completely. I will be cutting out the existing hedges on the North side of the house and replanting some new ones, as I imagine that a really large flower garden is going to be terribly difficult to keep up.
Any other information on soil amendment that you have would be welcome.