Password protected subforum

[Hawk7173]

Is there a way to fix it so that a members login password could be used to access a sub-forum rather than having to create a password that has to b requested?

I would like it so that a member logs into the main forum, selects the password protected forum and a little box appears asking for their password. The same password that they used to logon to the main forum.

I know I repeated myself, just wanted to be clear on what I would like accomplished.

Thanks in advance.