Somehow I can't get this thing to work

. When I create custom template, namely page_example and when I call that page in the browser ....?p=example it gives me this:
Notice: Use of undefined constant p - assumed 'p' in C:\wamp\www\upload\pages.php on line 9
Notice: Undefined variable: HTTP_GET_VARS in C:\wamp\www\upload\pages.php on line 9
Notice: Undefined variable: p in C:\wamp\www\upload\pages.php on line 10
Any help? Using VB 4.0.3 PL1 on a local test site on WAMP.