Multiple Login in Yahoo!

* Go to Start menu --> Run --> Type regedit.

* 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 Editor and restart Yahoo! Messenger.

* For signing in with new ID open another Messenger .