the commandline in the package should be the full commandline, as if you were to open up a cmd window and type it in. You don't need to specify the path of the file though, just the file it's self.....
"myfile.bat /switches"
set the package option to run from server, not download, this will still however obviously run client side, just won't download the files.
Neil J Cotton
njc Information Systems
Systems Consultant
HND, BSc HONS, CCNA, BCS, IETF, DMTF