I agree with macallan25 here. (not necessarily the part about going to Texas) I wouldn't worry about it. And as Bamamom13 said, contact Bama's Greek Life office. Also, there may be rush events in the summer in the Fort Worth area and they should be able to tell you about them. Or at least put you in contact with those fraternities that have them there.
Once you get to Tuscaloosa, don't say "frat" anymore.
Just to expand on this advice a little, ccmtx08, many fraternity members consider "frat" to be disrespectful or to carry Animal House-style connotations. Not everyone does, but Firehouse is right -- there's no point in risking offending someone inadvertantly.