Revisiting HP dc5750 imaging

NW65sp6 Zen7sp1
Problem: Netextreme gig card not recognized but hard drive is identified
with zen 7sp1. Must be something new with this card. I have other HP systems
(dx5150) with netextreme gig cards and I have not had any imaging issues.
Tried hp2. The card was recognized but then the serial ata hd was no longer
recognized. Short term workaround is I install a second older intel card and
image the machine under zen7 sp1. Not a good fix when I start to have
hundreds of these show up this summer for my small school system. I see hp3
is out. How do I get a hold of that to try it?