How to tell if a field type is auto_increment

I've been struggling to figure a way to determine if a mySql filed type is auto inc. Any ideas? Iv'e written a function that will INSERT form data which has the exact field names as the mysql table, thus looping through the table names and then building a query string for the insert. However I'd like to skip a field that's autoinc. That can be done if there's no hidden field in the form with the same name. I've created another function that updates a table but only with values in the http form that have changed, using the same logic as above, except I have to have a hidden field of the autoinc field so I know whcih row to update. Obviously the autoinc field won't be changed. Thanks a million in advance. -- Regards, John L. Creed pcExpressWay Consulting ***************************************** dBASE Gold Charter Member 210 ***************************************** http://www.pcexpressway.com *****************************************