Mod Rewrite Help (Error issues)

Hi, We are using SubDreamer CMS for our site. We have set up the .htaccess file as it says in their instructions so that URLs are friendly, but it is causing a problem with the mod_rewrite function on our phpBB. When I use the SubDreamer friendly urls, I get a 404 error if I click on one of the forums in my phpBB. When I remove the [login to view URL] reference from my .htaccess file, the phpBB forum works. By the way, my [login to view URL] in the phpBB forum has been renamed to [login to view URL] because I had to keep it in the root directory for SEO purposes, and all necessary modifications have been made in the forum files to make that work. I guess my problem is in the .htaccess file. Here's my code in .htaccess below: Options All -Indexes Options +FollowSymLinks RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*) [login to view URL] RewriteBase / RewriteRule [.]*-vf([0-9]*) [login to view URL]{QUERY_STRING}&f=$1 RewriteRule [.]*-vp([0-9]*) [login to view URL]{QUERY_STRING}&p=$1 RewriteRule [.]*-vt([0-9]*) [login to view URL]{QUERY_STRING}&t=$1 RewriteRule [.]*-vc([0-9]*) [login to view URL]{QUERY_STRING}&c=$1 Please let me know if you can fix this! Thanks!