Followed these steps for use of this deployment in KACE:

1. Extracted .exe
2. Created Install.bat with the code under Scripts
3. Compiled into a zip file and uploaded into KACE under Deployments

a. Installation Command is set to Configure Manually and set to look at Install.bat
b. Don't prepend msiexec.exe
c. Delete Downloaded Files

Install time for this was less than a minute, tested and deployed on Windows 7 Pro 32 and 64bit. We did have some issues with single sign on. After the first log in users would have to sign in to the single sign on service, however the server they were pointed at would be incorrect. We found that it corrects itself and points the right way once you exit and re-open the program.

if exist "C:\Program Files\WebEx\Connect\Connect.exe" goto END
if exist "C:\Program Files(x86)\WebEx\Connect\Connect.exe" goto END

msiexec /i "apsetup.msi" /qn /norestart RUNATONCE="yes"

:END

Cisco has this page with helpful command-line properties for the install:

http://www.webex.com/webexconnect/orgadmin/help/index.htm?toc.htm?17485.htm

These properties can be applied to the EXE or the MSI.