Copy values of one file in another one!!!

Hello to all the crazy nsis developers and users out there. I have a urgent question:
I need to update one file in the hardisk i some of the values of one of the files that i've packed in my install package are diferent, how can i accomplished it?
It is an ini file..
Thanks in advance!!!!
Pedro Garcia Rodriguez

Use ReadINIStr to read the values from your INI file and WriteINIStr to write them to the other INI file.