In This Tip I'm Going To Show You How To Use Multiple Accounts in yahoo messenger.
1: Go to Start
2: Navigate to HKEY_CURRENT_USER-->Software-->Yahoo-->Pager-->Test
3:ON the Right side if the page , Right click and choose new Dword Value.
4: Rename it as " Plural ".
5: Double click and assign a decimal value of 1.
6: Now close registry and restar yahoo messenger and try Multiple Login
Note:If this tip not working in someone pc then use this small registry file and enjoy muliple messenger:)
Use Of Registry File
Open rar file and double click on install.reg file and press ok its all done you can use multiple messenger ..