Check out this link. Read what Greg Mckaskle says.
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500000008000000834C0000&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0&USEARCHCONTEXT_QUESTION_0=closing+references&USEARCHCONTEXT_QUESTION_S=0
BJD1613
Lead Test Tools Development Engineer
Philips Respironics
Certified LV Architect / Instructor