How to access the windows key button on a keyboard that does not have one?

You could try this: Map Any Key to Any Key on Windows 7 / XP / Vista - How-To Geek (http://www.howtogeek.com/howto/windows-vista/map-any-key-to-any-key-on-windows-xp-vista/)

Ctrl-Esc

Note that this only brings up the start menu and cannot be used to do the shortcuts like Windows+U for the "Ease of Access Center" or Windows+E to open an Explorer window.