This should be moved to the Rent/Trade board.
I'd like to clarify what Ed is saying. DVC members have access to a select portion of Interval International's inventory, some 10% or so. There are also a group of hotels/resorts that are world class and on a list called the Concierge collection. They are very expensive both with cash and in terms of points. To link II and CC is not ideal. While many of the exchange options though II are quite nice, few come up to the level of DVC. I'd say than only some 20-30 resorts on the exchange list are truly up to the level of DVC and about that many more are fairly close. Top Marriotts, top Royals, St. James Place, Four Seasons top a short list I can think of at present that I would consider potentially even trades through II. Of course it depends on what's important to you.
Assuming you're looking to trade a condo or timeshare from the Gulf Shores area or similar, be prepared to sweeten the pot a lot. Depending on what you're offering (size, resort and season) and what you desire at DVC, you will need to structure the deal to make it attractive. Just as my estimation of a value comparison, I'd put a summer, 2 BR nice unit at Gulf Shores about comparable to a studio for 7 days (not Xmas, Easter) or a 1 BR for 5 days (S-F) at DVC. Of course there are various ways to change this scenario around including additional payments, more than one week, various length of stays for DVC, etc.
Dean