My current forum is at: mydomain.com/forum/index.php
I want to upgrade it, which will lead to mydomain.com/forum/forum.php
However, I see the /forum/ section as now being redundant.
Without having to install new forum at a higher level, and lose all links - internal and external - to the forum's topics, can I use mod_rewrite to convince the forum it's at mydomain.com/forum.php ?