If your are replacing or changing system files like (uxtheme.dll or imageres.dll) in Windows 7, Windows 8 and Vista then first you have to take ownership of the file and then grant your username full control of the file.
Just add this file to your registry and right click on the file you want to own and click on "Take Ownership".
own.zip 338bytes 36292 downloads
- Start button > All Programs > Accessories > Right-click on Command Prompt > Select Run as administrator > Click Continue.
- At the command prompt, input takeown /f filepath
- Now input icacls filepath /grant yourusername:f
Or you can use this tool: Take Control, if you are afraid to play with registry files. The tool has been made by WinMatrix members XPero to take ownership and get full control of any system file with ease.