Little Help Please.

I've completed the installation of the arcade.
and i've done the template editing etc.
anyway i clicked on the arcade link in my navbar.
but when i click on a game it dobule links the hyperlink. ie rahter then http://mydomain/arcade/gameinfo.php etc.. its like this: http://www.mydomain/http://mydomain/arcade/gameinfo.php
Any help?
Thanks.

[MrZeropage]

Please provide ACP+FTP-Access so I can check this out - never met such problem before ...