How do I install and earlier version of  Windows Live Messenger on my new Windows 7 laptop?  I cannot find the existing program uninstaller?  Control Panel in this version of Windows is less than helpful.

The existing version of Windows Live Messenger is too busy and full of ads.  I only want a simple version that is not so distracting and frustrating.

I  had problem on the messenger and it wont uninstall ,so I used Revo Uninstaller.
After that I reinstall Windows live messenger but its still detect the messenger wich I had removed it by Revo !!

And I had no error message