phpbb2 integrated with site/s

[login to view URL] is the main site. There are 3 key parts to this job: 1. customize the forum which is currently installed to match the site. 2. make the satellite clones of the main site, use the same forum but with a site specific css sheet that makes the colors match the site so for example: [login to view URL] needs to point to the same forum, but it should reference a stylesheet which is local to the site. Result: the forum should have that brown/khaki color of the ...[login to view URL] page, but it should have the same discussion forum data as the main [login to view URL] page. Please try and do this in a way that avoids having to install the entire phpbb system onto every site. We've got 20+ of these sites, and the ultimate aim is to grow to over 100, so I'd prefer to have as much of the site logic remain on the main site and have the satellite sites refer to the main site's forum. In the best case scenario, only the css related files would be uploaded locally and maybe not even all of these. Please only respond if you've taken a moment to look at the pages and understand what i'm trying to accomplish. I hate canned responses... I need the work done by the end of tomorrow so I'll take the person who seems like they've taken the time to figure out how this will be done and not the person who is just trying to win the bid and then going to figure out if they can do the work later... Thanks a lot.