If your are replacing or changing system files like (uxtheme.dll or imageres.dll) in Windows 7 and Vista then first you have to take ownership of the file and then grant your username full control of the file.
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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)
: 33877
[own.zip mirror]
...
To remove the feature just run this file.
own_rem.zip (248bytes)
: 12287
[own_rem.zip mirror]
...
If you don't like above registry files, then follow these steps to do this manually:
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 use this tool:
XPero has made a handy tool to take ownership and get full control of any system file with ease.

Just add this file to your registry and right click on the file you want to own and click on "Take Ownership".

: 33877
[own.zip mirror]
...
To remove the feature just run this file.

: 12287
[own_rem.zip mirror]
...
If you don't like above registry files, then follow these steps to do this manually:
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 use this tool:
XPero has made a handy tool to take ownership and get full control of any system file with ease.