Joomla Site Migration

We would like someone to migrate this site: [login to view URL] into Joomla. The existing database is managed via Subdreamer. There are approximately 60 categories in the current database. If the database could be ported over clean then we would need someone to help us set up new sub categories and show us how to tag the existing content to appear on multiple pages within the site using Joomla's multi-tagging fuction. I'm including a rough mockup of the new design showing the top level navigation buttons. We prefer someone with previous experience in database migration and who understands the Joomla environment. EJ