You could attend their Summer Advanced Camp and see if you get noticed.
2008 Advanced Skills Camp - The Ohio State Buckeyes Official Athletics Site - OhioStateBuckeyes.com
If that's not possible (i know you said you're in TX) then I'd just call the Baseball Office and ask for info on walking on / tOSU's open try-out policy.
Asst. Coach, Eric Parker's contact info is listed at the bottom of the Summer Camp link: 614-247-6308 /
parker.629@osu.edu I'm sure he can point you in the right direction.
