HI, I need this somthing that will replace a system file on reboot. I'm trying to replace a dll that windows uses, and I can't overwrite it when windows is running. I don't want to use a app for it because its going to be my own app that modifyes system files to change the look of the system. So would anyone know if there is a command that will copy and replace a dll on reboot or even a file that i could enter a command into so it will execute before booting? Hope someone can help!!

I think you will need to write a C or C++ application using the Win32 API MoveFile with the option MOVEFILE_DELAY_UNTIL_REBOOT.

See i'm pretty sure there is a much simpler way of doing this but i have not found a way yet. If you install seven transformation pack (Or Vista transormation Pack) and then run Copy Lock > it will show you the files that are going to be moved. So if i just figure out how it does this i can find a way to implant it in to the setup file. But so far the only way i can think of getting it in the setup file is by using a batch file that launches after the setup.