Common Error Trap

We have written a number of applications in VB6 in accounting and finance that have been customised for clients. During the customisation process some of the users encounter runtime errors that we didnt see during the testing process. We? need a sample application written in VB6 SP6 that uses a common module that traps any error when encountered and produces a support form with the error details and the time and date encountered. Once trapped the user is returned to the application prior to the action that produced the crash. Once we understand the coding we will introduce this error trapping code into application and link it to our Support Request form that emails the issue to us for attention. The sample application is more a fully documented study on how to trap any error so must be well documented in code comments. The application must also produce an series of errors to demonstrate the trap.