I heavily doubt the Texans will be looking to draft a WR with their first pick seeing as how we still can't give our QB adequate protection and we don't yet have the personnel to terrorize the other team's signal caller. IMO Our biggest needs are OL, DL and another stud in the secondary.
Having said that, If Mike Williams is on the board at #13 (and not on trial or dead) I don't see how you pass him up. I wanted the guy last year (but wouldn't trade Dunta for anyone now).
Or we could wait a few years for his evil twin, Dwayne Jarrett. Watching Matt Leinart play pitch-and-catch to Super Scary Freshman Dwayne Jarrett this year reminded me a lot of watching Carson Palmer tossing apples to Williams.
WR's sure are getting big and scary. I sleep better at night knowing we have a stud corner from South Carolina watching our backs.