When you run an executable file that contains a custom control, its associated .OCX file must be registered using REGSVR32 or a similar utility. If it is not registered, the application is unable to find the code needed to create the control. If a custom control cannot be found, the Visual Basic runtime DLL generates the error message "File Not Found". Most DLL's should also be registered.
To distribute an application that uses custom controls, your installation procedure should copy all required .OCX files into the user's Windows System subdirectory.
If you are using ODBC databases in your application, the target machine must have ODBC installed and be properly setup to use your database. Use the standard ODBC setup from Microsoft to accomplish this.