When you right-click My Computer icon in the Desktop and choose Properties, the Remote tab may be missing. As a result, you may be unable to configure the Remote Assistance / Remote Desktop settings. To restore the tab, follow these steps:
Click Start, Run and type this command:
If you receive an error stating that the module could not be found, or stating no registration helper is registered for this file type (which indicates a corrupt DLL), extracting a new copy of remotepg.dll from CD will do the trick. Make sure that you extract the updated copy of the DLL file if you have applied Service Packs to your system. Register the DLL again.