Y! Multi Messenger 8.x and 9.x

Y! Multi Messenger is a useful utility that allows you to run multiple instances of Yahoo! Messenger instead of only keeping one open.

So you can sign in with different ID, then how to use ? its really simple you just need to following this steps :

1. Copy then paste Y!Multi Messenger.exe and RaveButtons.ocx files to the c:\program files\yahoo\messenger.
2. Register RaveButtons.ocx, you just needs to click "Start" - > "Run" then type this "regsvr32 C:\Program Files\Yahoo!\Messenger\RaveButtons.ocx" without quote.
3. Open the program up and either select to Enable or Disable the patch.
4. Than sign in with yours ID as you like.