WordPress MU

I need someone to explain to me the difference between a buddypress theme and a wordpress MU theme.

I am creating a professional looking site, that I would like to link and/or incorporate features of buddypress community. That being said do I install and activate a wordpress theme (such as Ines that is set up to have buddypress widgets) and still bring over the default buddypress theme and activate that as well? Then how do they link together? I guess what I am asking are these two different entities. I also need to have the ability to customize a little -- without knowing any PHP coding.

I would greatly appreciate someones assistance.

You can use

http://wordpress.org/extend/themes/buddymatic

which is a theme framework that works on standard blogs, BuddyPress member blogs & BuddyPress home blogs.

Also, the codex for BuddyPress is at

http://codex.buddypress.org

The code has info on creating BuddyPress themes.

A buddypress theme is just a wordpress theme with BP elements in it is all.

Does anyone have a link to a thorough newbie proof tutorial on how to integrate old Wordpress themes with BuddyPress?

I tried, and partially succeeded in getting BuddyPress pages to use WP theme settings, but the alignment and placement of widgets is all off.

Old WP theme with BuddyPress.