Yossi,
Refer to the following KnowledgeBase on our website:
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/5654f94cdf5954ff86256b37006758c0?OpenDocument
Regards,
Cyril Bouton
Applications Engineer
National Instruments
Cyril Bouton
Active LabVIEW Developper