Here's very simple and easy trick ..
Go to Start Menu
Run
Type Regedit
Look for HKEY CURRENT USER
Software
yahoo
pager
Test
There you may find only one registry named Default
Right click in that area Click New Dword Value
A new registry will appear there..
Rename it as Plural
Right click
Modify
Set the Value Data 00000001 and click OK
Open another Yahoo Messenger and Enjoy logging with another ID
cheers....
