I'm a relative noob. We just installed the Ultimate SEO URL rewrite to our forum. It shows in the ACP as a tab with all of the settings I would expect to see. We have it set to Mixed Mode. Did the settings for .htaccess and uploaded it to the root of the forum. Turned on Auto rewrite and cleared the cache. When the forum is loaded, the template formatting is all screwed up. Clicking on one of the links results in a 404 page loading.
Here is the .htaccess file:
# Lines That should already be in your ...