HP Device Manager is one of the (free) ways to setup units remotely.
You can find the Software and more information with this link:
HPDM Admin Guide:
ftp://ftp.hp.com/pub/hpdm/Documentation/AdminGuide/4.7/
Best Practice White Papers:
ftp://ftp.hp.com/pub/hpdm/Documentation/WhitePapers/4.7/
For the installation it's suggested to install HPDM Version 4.7 and then the Service Pack 2: