Three columns homepage - which portal?

Hi all,

We're initiating a conversion from PhpBB3 and wondering if anyone knows of a way to have a home/landing page with 3 columns: left sidebar, centre area, right sidebar? The rest of the site would pretty much be a forum format.

It could be a portal addon or any other type. I've seen CTA Featured Threads, but it doesn't seem to offer that possibility.

Many thanks!