I believe that NI-Vision is an extra software package for purchase. This includes the EasyAcquire function. See http://sine.ni.com/apps/we/nioc.vp?cid=2881〈=US
The basic vision software is NI-IMAQ, which does include everything you need to develop vision software, but the NIVision makes things easier to use.
Regards,
Mike
Mike Evans
TRW Conekt
N.I. Alliance Member, UK
http://www.Conekt.net