I'm no mod_rewrite expert, but I'm thinking it's something that could be done fairly easily with a single .htaccess file. If I get a chance I'll look into it. It sounds easy (but probably isn't).
__________________
My PhotoPost Installations are at: FordF150.net - Ford Truck Enthusiast Site FordFlex.net - Ford Flex Enthusiast Site FordTaurus.net - Ford Taurus Enthusiast Site FordFusion.net - Ford Fusion Enthusiast Site