Well, I managed to answer my own question! Maybe this will help someone else:

Just add a RewriteCond to the rule:

RewriteCond %{REQUEST_URI} !^.*forums.*$
RewriteRule ^(.*).html$ $1.php

If any knows a better way to do this let me know!!

Hello! I have been using the mixed mod-rewrite without any problems, but I am wanting to run a new rewrite rule for my main site files that rewrites .html to .php in the urls. (in other words, a link to page.html is actually page.php) I have it working just fine, but the rule causes a 404 when you t...

I will watch for it. In the meantime I will look more into mxBB. PS, I use phpbb as a forum for each client of mine that asks for forum functionality. phpbb-seo is a large part of the selling point because of the 'SEO-ability' of the pages. Thank you for coding such a great set of tools that make li...

Is the directory a mod, or was it custom built by you? I have a forum(travel and tourism related) and had programmed my own php directory, but would much rather have it integrated in the forum as you have.