URL Differences and Redirects

[BirdOPrey5]

.htaccess is either in your website root directory or your /forum/ directory. If it is in the forum root is affects all folders below it, if it is in /forum/ it affects /forum/ and any folders below that.

If it doesn't exist (it does not by default in vBulletin 4.x) you can create your own, it is a plain text file called .htaccess

[italynstylion]

I think that fixed it! I had to create my own file since one didn't exist already (like you said). I had to modify the code that apache recommended a little bit to make it work. here's what I ended up using....
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/forum [R=301,L]


Thanks for all the help!