In this case the file with the name FILE.TXT is placed on de desktop of all users.
Create the package and place it f.e. in C:\Temp. in ZCREATE you start the script (NATIVE cmd "%systemdrive%\temp\install.cmd"
What you also can do is place _NONE_ in ZVERIFY and ZUPDATE if you don't want verification and updating of the file.
You can also create a script to delete the file (if you want) and place the uninstall.cmd file in the same package. The uninstall.cmd should be started in BDELETE. If you use the BDELETE then the file is removed from the desktop before the source files are deleted from the client.