How to set up XP Mode in Windows 7

Found a well documented guide what to do - and in which order. It is documented in "The Clubhouse" at Microsoft.

Unfortunately, the clubhouse does not accept all membership applications.

You should show a strong interest in social networks when you try to register ;-)

Here is the link to the article:

http://clubhouse.microsoft.com/post/F5CF78DEA3328162-212158