Start run from the start menu or press 'windows+R' then type 'regedit' and press enter. Click continue if the the UAC dialog appears.
In regedit Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
Find the key called ProgramFilesDir on the right pane
Double click it to modify and now change the path to a specified folder. Click ok and close the registry.
Tip:
Dont add a '\' on the end of the location, for example c:\program files as opposed to c:\program files\
You can also find Common Files path, Device Driver path, Media Path, Wallpaper directory in this location
For system and special folders use:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
Note::
Use registry editor carefully. Make a back up of the registry before carrying out any tweaks.
