You can turn metro off
Edit this key: edit this key to disable metro and get the normal desktop UI
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer :: RPEnabled = 0
To be fair to microsoft this is a pre release version and I wouldn't expect the option to be so hidden in the future
Disclaimer: This info is 2nd hand info and I haven't tried it.
I haven't downloaded Win8, and I don't expect to acquire it until I want to run something that requires it.