Server can't use/see what's after the .php?!

Hello,
I just moved my oscommerce installation and now it seams like it can't see what's after the .php. If I write index.php I get to that page, but regardless of if I write anything after (or click on any link) I get to the same page. Please help, what do you think it could be?

The adress is http://79 [dot] 99 [dot] 1 [dot] 24/

The server is a linux server with HTTPD/MySQL installed.

Regards

If you have an htaccess file in the web root directory check it for mod_rewrite calls that don't include the QSA modifier.