Ive recently been learning how to use modrewrite and cam ea cross this problem in my own site. If you haven't already looked at the mod_rewrite forum then go here
Its easy to fix instead of using a relative path like this css/style.css[/QUOTE]
One solution is to use absolute path (ex /CSS, or /js rather than just CSS/, /js but this does not seem a reliable solution since we've to change it on all files,
Any other solution based on .htaccess rules, which is independent of editing all PHP files and let us use "relative paths"