CMS Front Page doesn't work

[محروم.كوم]

Hello*

Does anybody know how to make the Front Page and the Home button to work?

I can see my site only if I put this http://www.chessforums.gr/forum.php

and NOT with http://www.chessforums.gr or http://www.chessforums.gr/index.php

Any help? __DEFINE_LIKE_SHARE__