SCE software deployment not working using a setup.exe file

Hi. I'm trying to do a silent application installation using a setup.exe
file in SCE, but it never seems to install on my test client workstation.
The application comes with a setup folder containing the following files but
no MSI file:

data1.cab
data1.hdr
data2.cab
files.txt
Help
ISSetup.dll
layout.bin
setup.BMP
setup.exe (InstallShield version is 12.0)
setup.ini
setup.inx
setup.isn
SQL7
_Setup.dll

I can sucessfully do a silent install manually (using a pre-created
response file) using the following command line:

<path_to_setupfolder\setup.exe -s f1<path_to_setupfolder\responsefile.iss
f2<path>logfile

Tried above command line with both UNC and absolute paths, and also
preceeding the "s" with a dash and forward slash, and it seems to work OK.

When I run setup exe manually, it prompts for application install directory,
etc. Also, after the main app install finishes, the installer then wants to
run an install of Crystal 11. There is a separate folder for the Crystal
setup, so I can run the Crystal install first and independently of the main
app if I want. In that case, the main doesn't bother prompting to run
Crystal if it is already installed.

I just want this install to behave as if deploying an MSI using Group
Policy. Can anyone get me started as far as how to package all this
correctly in SCE because it is not working so far? I've tried waiting 22
hours for the agent to detect the software deployment job, but it never
installs? I tried setting a deadline, but it still doesn't work. If I set a
deadline for say 5 minutes in the future, is it supposed to download and
install the package at that time? Thanks for your help.