Hi:
You install the lastest AMT SOL driver available from the specific business model desktop PC's support page.
For example...if you are working on an 8000 Elite, you install this driver...W7 is the lastest one.
http://h20564.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=4066929&swItemId=vc_75036_2&swEnvOid=4059
There is no one size fits all driver. They are specific to each model because of the different versions of the AMT hardware.
On the newer business desktops you need to install the Intel Management Engine Interface driver from the support page, if there is no separate AMT-SOL driver.
If my explanation is inadequate, please provide me a list of all PC's you need that driver for, and I will post the driver you need for each model.