If you are logged in as admin and you don't see a navigation link to control panel I would bet it is classic.
Classic used files with the cgi extension.
If it is classic you need to know the url to the control panel.
From the classic manual.
Goto:
Example
http://www.example.com/cgi-bin/forum/cp.cgi

OR

http://www.example.com/cgi-bin/ubb/cp.cgi

If it is in fact classic look several forums down on this board.
Pretty much at the bottom.
There is some documentation there also.

Blue Man Group
There is no such thing as stupid questions. Just stupid answers