How to do a clean uninstall of Windows Live Mail 2012 in Windows 8

I need to uninstall WLM2012 and install WLM2011 because WLM2012 will not allow me to send group emails.  I have gone through the normal way to uninstall the program and it has disappeared from my computer but when I try to install WLM2011 it tells me that I have a newer version installed.  I need to know how to do a clean removal of the WLM2012 program.  I tried one suggestion but it did not work as I could not do all the steps (not found on my computer.)  I hope someone can help me.  (PS:  This is not really about installing and upgrading but it was the closest to my actual Topic.)