2 Feb 12, 2008 11:08
Welcome to the forums.
B2evo can perfectly run inside a frame. However, the idea is that B2evo you would normally create a skin for B2evo where you add your logo and links to the rest of the site. This skin is fully modular so you can choose to do the blog without a large header. A sidebar for the blog is useful, though not strictly necessary.
B2evolution is a CMS centerered around the idea of a blog. It has many additional features, even more than the site you mention can sum up. Version 1.10.3 is end of line and rock solid. Currently version 2.4 is marked stable for production. B2evolution will work together with any CMS, but for maximal benefit would require the databases to be linked.
I hope this information is helpful making your decision.