Activating new copy of nis 2011over nis2010

Hi,

 

I just purchased nis 2011 retail copy, and installed fine, but its saying I only have 3 days left, as it's upgraded my old version of nis2010. There doesn't seem to be anywhere to activate the new version, I even tried un-installing then re-installing and it remembered the old version still..... HELP.

 

Thanks in advance.