We've rented out our points a few times and I have posted the number of points that I ahe available and the cost per point ie:$10 (so $10 x 50 points needed would cost the renter $500). I then call DVC and see if there is availablity at the resort(s) and dates of choice. If available the potential renter and I agree on the point value (depends on the day of the week and view prference/availability). If accepted I send them a rental contract and they send the deposit/payments. It's worked out well each time. I have also listed the reservationt hat i had that we had to cancelf or various reasons (ie: 3/10-17 2008@ AKL value studio, and point amount, etc). If there are any takers then we enter into a rental contract.
If you are unsure about how to go about renting points read through all of the Rent/Trade stickies and ask questions. I wasn't sure how to do it at first but asked. It was easy to do and there are pelnty of threads that offer guidance for the process. Definatly go with someone who has a larger number of posts/has been here a long time so that you feel more reassured that they are not a scammer. Also check their post history if it will give you a feeling of "knowing" somehting about them.
Good luck and happy planning.