Hi,
we do it with batch-files. Create a file "hostcopy.bat" and put these lines in it:
xcopy <hostfile> "C:\WINDOWS\system32\drivers\etc" /y
exit
Then create the package - for the program you've to press the Browse-Button on the command-line field and select "All Files". Use your Batch-File.
Under "Environment" you've to set the program to run with administrative rights and that it requires a drive letter.
Everything else runs as like with any other program.
Did it work?
Friendly regards,
Gerhard