A while back we did this using points that were given to us by a family friend who could not use them due to work commitments. She has a lot of points, so she has a lot of trading power (or whatever it is they call it. sorry I'm not familiar with the terminology) and was able to get us the week we wanted very easily. She did have to watch for it every day starting at about 9-10 months out and if she didn't jump on it right away, we didn't get it. For example, we initially hesitated on a 2-bedroom at Boardwalk available in early December and it was gone in 30 minutes. I have heard that BLT and VWL are very difficult to get and that the Epcot resorts are impossible to get during Food and Wine, but it seemed like everything else was available, especially if you had some flexibility with your dates.
After she made the reservation, all I had to do was give the RCI representative at
DVC Mouse Services my RCI confirmation number which she converted to a regular DVC reservation, and then she added my information (husband, kids' ages, etc) to the reservation. The DVC rep was wonderful. She could not have been more helpful. Check-in was also very easy, so it's obvious that Disney has been dealing with a lot of these RCI trades. They upgraded up from a standard view (which I think is what most RCI trades are) to a Savanah view without us even asking.
Good luck!