To Unlock the hidden themes on Windows7, do the following, 1. Open Windows Explorer 2. Click Organize , and select folder and search Options. 3. Select show hidden files, folder and drivers and uncheck Hide Protected operating system file (Recommended). If prompted with conformation click Yes 5. Click Ok 6. Browse the followingfolder: C:\windows \Globlization\MCT\ 7. There are five folder in the name with format MCT-XX (Where XX is AU, CA, GB, or ZA)which prepresents globalization settings for each region. Go in to the folder that you want to active its theme. NOTE: AU, CA and ZA regions have the same themes. 8. Open the theme folder inside the selected region folder. 9. Double click on the XX. theme file to apply the theme to the windows desktop