Double-click the file to run the UXTheme patch. A window will appear with some information – click Patch. The following message will then appear (along with a “Windows File Protection” dialog). You will need to wait for at least one minute before clicking Cancel. Do NOT insert your setup CD.
It will ask do you want to keep these unrecognized files versions?” Click on Yes. Then click OK on the message shown above and restart your computer for the patch to take effect.
(If at some later stage you want to uninstall the patch, run the program again and it will un-patch your system. Then reboot your PC.)
Afterwards copy the theme file and shell of your choice to C/WINDOWS/RESOURCES/THEMES
There are 50 custom themes to choose from along with wallpapers