Someone maybe already known that solution how to replace one file in system32 folder in Windows Vista, but i thought it’s so helpful for dummies

At an elevated command prompt, type the following command, and then

press ENTER:

takeown /f Path_And_File_Name

For example, type

takeown /f E:windowssystem32jscript.dll.

Type the following command, and then press ENTER to grant administrators full access to the file:

icacls Path_And_File_Name /GRANT ADMINISTRATORS:F

For example, type

icacls E:windowssystem32jscript.dll /grant administrators:F.

Type the following command to replace the file with a known good copy

of the file:

Copy Path_And_File_Name_Of_Source_FilePath_And_File_Name_Of_Destination

For example, type

copy E:tempjscript.dll E:windowssystem32jscript.dll.