Hi QT,
I'm a bit surprised that nobody replied to your inquiry, but I'll give it a shot.
First of all, a little DVC technical info. September is going to be very difficult to get BCV because of the Food & Wine Festival at Epcot. Most BCVers are going to be on the phone at precisely 11 months out trying to book rooms. BCV is a small resort, and the available rooms will go very quickly. So that means you need to have everything in place and be ready to book 11 months from your checkOUT date. (There's a thing called day-by-day booking, but I doubt you'll find an owner willing to go through all that trouble for a rental.) That means you need to have all your dates and lodging lists in place by October 2007. An easier option would be BWV, which is a much larger resort, but still has the same F&W issues.
Second -- DVC is a points-based timeshare program and the point cost for Friday and Saturday night stays is roughly double the rate for Sunday-Thursday. If you have Friday-Saturday needs, you'll probably find it less expensive to book through Disney CRO. That's a separate inventory of rooms, and I think you can book through CRO farther in advance (not sure-don't use CRO). If you are eligible for any discounts (AP, Florida resident, etc), you might find it easier and less expensive to book through CRO.
Third -- Renting a DVC ressie is NOTHING like making a hotel ressie. You are dealing strictly through a DVC owner, and the transactions are just between the two of you. That means the rental is governed by whatever policies that particular owner uses, and there are serious penalties/restrictions/constraints that may come into play if any of your plans change. DVC rentals are NOT something that you can just pick up the phone and change a date or two, or cancel because someone decided not to come. If there is an issue, don't expect Disney to jump in. You are renting from one of their
competitors, and they have neither the inclination nor ability to help.
Fourth -- A
DVC rental requires considerable trust on both sides. You need to do a considerable amount of homework -- first to understand how DVC and DVC rentals work, and then to establish a comfort level with the owner you are renting from.
Fifth -- Cost. At the top of this page, you will see a link to DVC
point charts. Go there, go to your preferred resort, and click on the dates. From that, you can figure out the number of points required. Most DVC rentals range from $10-12 per point.
You might think that, with a big rental and therefore higher price you'd be an attractive customer and might get a lower price. Maybe not. The bigger the transaction, the greater the risk for the owner, and many owners don't have enough points to rent for a large transaction. That means you may have to rent from multiple owners and pay varying prices.
The best place to start with that is the DIS DVC Rent/Trade board FAQ. Read the stickies at the top carefully, especially the parts that talk about the process. Then, if you have questions -- and you will -- come back here and ask more detailed questions.
I have great confidence that others will come along and post some helpful links for you.
Good luck and happy hunting!