To make multiple login in Yahoo Messenger with Yahoo ID's at the same time

Using this trick you will be able to login with many yahoo id's at same time:
1. Click Start, Run and Type Regedit, then enter.
2. Navigate to HKEY_CURRENT_ USER/Software/yahoo/pager/Test
3. On the right page , right-click and choose new DWORD value .
4. Rename it as Plural.
5. Double click and assign a decimal value of 1.