Your 82357A is an Aglient GPIB adapter, and requires a little
additional configuration before you will be able to see it in NI
Measurement & Automation Explorer. Take a look at the
KnowledgeBase below, which addresses your issue.
How Do I See My Agilent 82357A GPIB-USB Interface in MAX/LabVIEW?
http://digital.ni.com/public.nsf/websearch/F7C187DBF09EBE1186256F550065BD32?OpenDocument