problem setting up PHP

[leeech]

i have install apache2 and php4 using apt-get

when i try to access a php file (e.g.
http://localhost/apache2-default/testphp.php) from firefox, it will
popup a dialog "What should firefox do with this file?"

in /etc/apache2/apache2.conf 
i have uncommented
AddType application/x-httpd-php .php

had restarted computer

but still the same. anyone had a solution?


-- 
leeech