ASP to Drupal complete migration/upgrade

I need a complete restoration of my ASP website. You may decide whether you would like to rebuild/optimize the existing custom built platform or you can choose to use joomla, drupal if you think it would work. The website contains entries from a Microsoft SQL Server database. It builds lists of categorized individuals and groups and the associations. A brief review of the site would be necessary to explain how it works and what is needed from the restoration.