Martin, Jeff, Lorenzo:
We've investigated this on the engineering side. We will be able to provide this ability in ES3 -- the next major release of LiveCycle. Currently, it is not possible to get this to work any which way.
However, to solve your current problem: Even today it should be possible to configure the User Management module on the server in such a way that your end users will be able to use their Windows credentials while installing the IPP printer.
Please refer to the User Management documentation or contact Adobe Support if you need to find out the exact steps.
Regards,
Amit Batra
Engineering Manager,
Adobe LiveCycle ES