I'm not sure if this has been posted before but I thought it may come in handy for the e-whores amongst us. You can login with multiple ID's on the same yahoo messenger. Follow these steps : ==>> * Make sure Y. messenger is closed * Go to Start ==> Run ==>> Type regedit,hit enter * Go to HKEY_CURRENT_USER ==>> Software ==>> Yahoo ==>> pager ==>>Test * On the right pane ==>> right-click and choose new Dword value . * Rename it as Plural. * Double click and assign a decimal value of 1. * Now close registry and restart yahoo messenger. * For signing in with new id open another messenger .