Thanks Raul and Glenn.
Raul, do you mean the setting the setting secure cookie in the cpanel or phpBB administraton? I have not use phpBB yet so I am not sure if that is what you meant.
Glenn, I plan to use the no-cache meta and us a robot.txt that tells the robots not to follow. You are also rigtht in that this client doesn't want to spend big bucks.
I want to re-ask one of my questions from above:
The bbs (like phpBB) would not have a problem using https connection?
New Question:
Would there any problems using the community SSL certificate or should the client, in this case, get his own?