In reply to SuperstarDJ:
My advice is to take it easy and just enjoy your climbing. Try not to put pressure on yourself or have expectations on what you 'should' be able to do. Almost barely worth looking at the grades - just pick climbs that look fun and have big holds. If you can't do them, so what? Take some (safe) falls.
After a few sessions getting back into it, focus on doing lots of easy climbs but with good technique - really think about the skills involved in what you're doing. If you're serious about avoiding bad habits, do some technique drills - Robbie Phillips' article good for these:
http://www.ukclimbing.com/articles/page.php?id=3694
Or if you're really serious, get some coaching sessions to put you on the right track!
Good luck with your return and most of all have fun.