Hello, InstallShield Limited Edition does not allow you to customize dialogs. You may have to create custom logic within your application to accept and validate the Serial Keys. Some suggestions in the below link:- http://social.msdn.microsoft.com/Forums/vstudio/en-US/0ae70d61-644f-44b4-bc29-13a65139f37d/how-to-show-dialog-box-for-entering-product-key However, the Premier and Professional Editions of Installshield provide a powerful dialog editor that can be used to create your own dialog as needed. Thanks and Regards, Swetha ... View more