BuddyPress.org

You would also need to set the #content to float:right

This is a basic source ordering technique that’s been employed #container acts as a wrapper and must be floated opposite to the sidebar direction to allow the sidebar to position alongside but after in the source markup

Hmm works for me in IE6, what exactly is out; is the sidebar simply positioned below clearing #content?

You shouldn’t really need to be adding meta tags to control IE8 it generally works fine and certainly doesn’t want to act as IE7. Compatibility mode is a bit of a joke it’s far more sensible to add a conditional stylesheet to handle earlier versions than force IE8 to render in cack mode throwing away all it’s benefits and improvements

One other thing about the layout, the positioning of the admin bar is not too clever with regards IE early versions that never understood position fixed, and other approaches would need to be found unless happy to have that adminbar actually sit as a footer.

With site layouts and sidebar columns a standard framwork I have always employed as a base is essentially two main parent containers along with a #content-wrap ( = bp #content) and a #content (bp = .padder) with either one or two sidebars that follow immediately after #content closes, using that arrangement one can fashion source ordered layouts with one or two sidebar, placed singularly left or right or flanking the content as a pair, with the a very simple group of rulesets to provide layout switching based on html or body IDs. #content-wrap is always floated with negative side margin as appropriate #content with a positive margin as appropriate, sidebars will drop into place using negative margins, the one oddity is that one has to be aware of the content-wrap float direction and that it must state a width otherwise earlier versions of Opera would have a fit

No problem, there may be further issues as frankly I haven’t bothered to look to closely at IE<8 and have been simply playing with extending the default styles which to be honest can be problematic trying to style or override existing rules, but the right group of elements exist in the markup to be able to configure as one wants. I’ll probably be looking closer at IE6 and it’s handling of three column fluid content layout and switching in/out of sidebars so if I find issues I’ll post them back (one that immediately springs to mind is that of handling of min/max widths as used in default)