Install Acrobat X or XI using customization tool (without Serial)

I am having difficulty with Adobe installing without the serial number. I have downloaded the "Adobe Customization Wizard X" For installing Adobe Acrobat. Created a Transform to install silently. I did leave out the serial number because we don't have a volume license, we just have about 150 various keys/licenses. I am hoping for it to prompt for the serial number at first use. Below is my command line Syntax:

msiexec /i "C:\Temp\Adobe_X_Std\AcroStan.msi" TRANSFORMS="C:\Temp\Adobe_X_Std\AcroStan.mst" /qn

How do I get Acrobat to install without a serial number from command line? Any guidance is much appreciated. Thank you