How do I set wp, so that it will open within a frame environment?

I am trying to set up a community directory and would like to place a public-facing brand and navigation bar that will set at the top or bottom of all pages in our network, as long as someone is a member of that network. I'm quite impressed with the bar on WPMUDev.org member area.

I am thinking that, by placing the pages within a frame, or iframe, I can then enclose the pages and include the menu frame wherever seems to work best.

I'm going to deploy the Ultimate Branding Bar, first, to see what I can do with it.

Any guidance is appreciated.

Thank you.