How to open two Yahoo Messengers at a same time on any Computer?

1.Go to start>run

and type regedit

2.Go to HKEY_CURRENT_USER and on following terms..

>Software
>yahoo
>pager
>test

3.Right Click on test and go to

New> DWORD Value.

4.Name the new file "plural"

5.Double click it and change from 0 to 1

6.Now you can open unlimited Yahoo Messengers.

7.That's all, enjoy the tricks..