Windows windows live mail 2012: I am a rookie trying to help my 92 year old dad. Appears properties will not activate to allow us to change passwords and retrieve emails. I am finding advice that says uninstall and reinstall, but a dumb question: how do I know what version of Windows he's on? Don't want to uninstall and discover I created a worse problem. Fast help appreciated. Right now nothing is landing or sending. 

[Original title: Windows live mail 12]