Go to college, get free gas. To show they understand how much skyrocketing gas prices affect their mostly commuter student population, Butler Community College officials are giving students who enroll before Aug. 9 a chance to win gas cards. Ninety students will win $50 Dillons gas cards. One will win a card worth $500. Extended enrollment periods will be held today and Aug. 9. Today's enrollment is from 9 a.m. to 3 p.m. at Butler Service Center, 2626 S. Rock Road in Wichita. Next Saturday's enrollment is 10 a.m. to 3 p.m. at the Andover and El Dorado enrollment offices. ...