Multiple login in yahoo without any softwares

We can use multiple login in yahoo without any softwares. Use the following steps:

> Go to Start -> Run type regedit.

> Navigate to HKEY_CURRENT_USER -> Software ->yahoo ->pager ->Test.

> On the right page , right-click and choose new Dword value.

> Rename it as Plural.

> Double click and assign a decimal value of 1.

Now close registry and restart yahoo messenger and try Multiple Login. For signing in with new id open another messenger.