MySQL upgrade error
 

When I try to upgrade MySQL at my host the install script kicks out the following:

Quote:

The MySQL5 upgrade failed: The following problems were detected by the upgrade script:

• The table 'visitormessage' in the database 'vcforumvb' uses the storage engine '', which is not supported in MySQL 5.
• The table 'visitormessage_hash' in the database 'vcforumvb' uses the storage engine '', which is not supported in MySQL 5.
• The table 'word' in the database 'vcforumvb' uses the storage engine '', which is not supported in MySQL 5.

You will need to either resolve these problems or manually upgrade to MySQL 5.
Any thoughts?