First, follow the link to the
DVC point charts just below the banner at the top of this page. Find the resort you want, and the corresponding points for each night of your stay. That will give you the total points needed. Remember that the time frame you are looking at is the highest point season for DVC.
Now, points seem to be renting at an average price of about $12 per point...that will give you a ballpark cost.
You can post your request on the DVC Rent/Trade board. Be sure to read the posting guidelines for that forum, as all threads are screened prior to posting.
Look for a renter that has a fairly high post count here on the DIS. Get the specifics of your agreement in writing (payment due dates, payment method, cancellation policy, etc) Be sure to have true and valid contact info for the owner (address, email, phone numbers, etc). Use "common sense"..don't send a payment via any method where someone could claim it anonymously (western union, postal money order, etc)
Renting is a transaction of trust on both sides. The owner trusts you to make payments on time, you trust the owner to not cancel the reservation ad follow the agreement. Disney/DVC will not verify the reservation or become involved in the transaction in any way. You should receive a copy of the written reservation confirmation that DVC will send to the owner.
Given your dates, finding an available reservation may not be easy, even this far before travel. Good luck
