I've done that already and that works well, however - I'm trying to make things easier for my client so its more automated and so she won't have to 'add' the users manually to the correct role.
What I was wondering if there is a way to:
A: Automatically register users when they make a purchase
B: Send users a link to the forum when they make a purchase but the link has a 'key' that will register them in the correct role.
It may be something that we will have to build in which is fine but I wanted to see if anyone had any thoughts on how it might be done.