Create the administrative installation using msiexec /a pi.msi. Copy over the POD folder from CD1. This is the digital image library.
There are two types of installations, Typical and Full. Typical is about 400 megs, and full is over a gig. Use the INSTALLLEVEL property to control this. typical is 200 and full is 250.
I also added the following to a transform:
DESKTOP_SHORTCUT=1 - this adds the desktop shortcut since the MSI doens't create one automatically
INSTALLWMP9=0 to prevent the MSI from installing windows media player 9.