Brent,
Going throught this right now myself.
Do you know when the last time it was registered. if it was more than 20 years ago you get to have a lot of fun, like I'm having.
Under 20 years: it should still be in the system and they can reissue the title.
Over 20 years: You have to have a good bill of sale and 2 appraisal. Take this to TXDOT and they will issue a form that you have to take to a bonding agent, who will issue you a assurance bond that you then take back to TXDOT and they issue you a bonded title.
Hope that helps.