The Columbus Department of Parks and Recreation has started registration for their Spring 2008 tennis lessons.

It costs $25 total for six or seven (I can't remember) 1.25 hour lessons, with one lesson per week over the course of 6-7 weeks.

More details here:
(scroll to the bottom to ADULT TENNIS PROGRAM) - includes the schedule in PDF format as well.

It is a fun time, good way to get outside and get active, meet people, etc, and it equates to about $4 per lesson, which is dirt cheap. There are lessons for every skill level, even those who have never picked up a racket.

PM me with any questions. I am not involved with Parks/Rec but I have taken the lessons for 4 sessions now.