I have to agree with stevens397, go to TUG. You will find a wealth of info on there.

But...

Having a Platinum week doesn't necessarily mean you can exchange it for points every year. In our case it's only every other year.

As a rule resales don't get the points exchange priviledge, but there may be exceptions.

If you go to the classified section on TUG, there are many people selling Platinum timeshare weeks (including a guy called Snoopy.....)