In reply to the power: This has probably been said many times before...
Don't do any strenuous exercise on your arms whilst your elbows are inflamed.
You can test if your elbows are inflamed (by golfer's elbow) by bending yor elbow to about 45 degrees and press with your thumb (of your other arm) on the bone on the inside of your elbow and make small circles with it right on the tip of the bone). If your elbow is inflamed it will hurt!
If it hurts, ice it and take anti-inflammatories (such as ibuprofen or aspirin). When it stops being painful start doing the following stretch on it:
http://www.proactivefitness.com/stretching-golfers-elbow.html
(the stretch makes you bend your wrist back as far as you can).
Also, start doing some very easy climbs and stretch before and after every route. Continue to ice and take anti-inflammatories. If your elbow becomes painful (do the thumb test above), you have done too much so reduce the intesity of your activity. However, you should continue to do gentle exercises and continue stretching. As your elbow improves you can gradually increase the intensity (backing off if it becomes inflamed). After six weeks or so, you should have recovered. Also, you can try Tom's stretch and the broom handle with weight exercise during this period. The main thing is to not do so much that you get the joint inflamed, so keep checking!