Systems Management

I can't get this dang software to install silently at all. It's an installshield file, so as normal I would run "setup.exe" /r and then use the following setup.iss to deploy it silently going forward using "setup.exe /s".

However, this installer is comprised of multiple installshield installers, each with their own individual setup.iss file. According to http://unattended.sourceforge.net/installers.php this is called a Package for the Web. I've followed the instructions to pass on the silent install switch and record, but it does not install. The installshield log file returns

[InstallShield Silent]
Version=v7.00
File=Log File
[ResponseResult]
ResultCode=-5

How the heck do i package this in SCCM for silent install?