Ubuntu's parent company Canonical is launching "switch to Ubuntu" migration services

Including varying levels of desktop support.

First, a little praise for Canonical: Now is exactly the right time to promote Ubuntu to individuals and small business owners. The reason: We’re nearing another PC market inflection point, where millions of uses will be forced to decide whether to hold tight to Windows XP or leap to Windows 7. Converting some of those users from Windows to Ubuntu sounds like a logical, timely strategy.

http://www.workswithu.com/2009/07/30/canonical-launching-switch-to-ubuntu-migration-services/