Are you bored of logging ON and OFF in Yahoo Messenger in order to use your Multiple Login IDs? This simple trick will help you use all your ids at a same time. Multiple IDs in Yahoo Messenger Go to Start Menu -> Click on Run -> Type Regedit and Press Enter Click on HKEY_CURRENT_USER -> Software -> Yahoo -> Pager -> Test On the Right you will find a file named "(Default)"... Right click on ...