This site is now running on Drupal 6, yeah! The basic part of the upgrade process was straightforward:

• Backing up the site with a backup script.
• Deactivating all contrib modules and themes.
• Moving the Drupal 5 files to a new directory.
• Unpacking Drupal 6 and contrib modules in the web root directory.
• Running the database update script.
• Activating contrib modules and themes.
• Running the database update script again.

If you plan to upgrade a Drupal site without having done so before, I highly recommend this screencast by Angie Byron. The video walks you through upgrading a site from Drupal 4.7 to Drupal 5, but most of the information applies to a Drupal 5 to 6 upgrade as well. Also read the Upgrading Handbook.

read more