Table Wizard requires the Schema and Views modules. In addition, you may need to install the following patches to support external tables (check to see if these patches are in the Schema and Views versions you have installed):

• Schema 1.3 or earlier: http://drupal.org/node/411538
• Views 2.3 or earlier: http://drupal.org/node/380560

For versions of Views up through at least 2.5, you need the patch at this location to be able to create custom views for tables with more than 32 characters in their name:

http://drupal.org/node/437070