How to open Multi Yahoo Messenger in one computer?

Method 1:

You can open multiple yahoo messenger in one computer, please follow the link below.
1. Click “Start” in your computer.
2. Click “Run” and type “regedit”.
3. Go to HKEY_CURRENT_USER and click on “Yahoo”.
4. Go to the subfolder called “pager” –> “Test”.
5. At the right hand side, right click “New” and choose “DWORD Value”.
6. In “Value Data” type “9999999″.
7. Open your Yahoo and click it again so that you can open more Yahoo Messenger.
8. Have fun and enjoy.

Method 2:

Click on /HKEY_CURRENT_USER/ menuBrowse to Software/Yahoo as seen on the picture
/HKEY_CURRENT_USER/Software/Yahoo/Pager/Test and after u open test right click “new String Value ” and then name it plural.
Modify plural Value data to 0 (ZERO)
Click on Ok and Close every thing.
Now you can open multiple yahoo messenger windows. Just keep on clicking on the yahoo messenger shortcut and it will pop up new window every time.