My program hangs while i open a file.

Using multiple threads, would be able to resolve this.However, i don't know anything about it. Please provide me with resources in labview that will allow me to do this.

Well, more information is needed in order to provide the adequate advice.
About Multithreading, check the following information from ni.com:
Application Note:
Using LabVIEW to Create Multithreaded Applications for Maximum Performance and Reliability
http://digital.ni.com/appnotes.nsf/b0be082ea11554328625648f006a132a/99dbde3436c215208625658a00633640?OpenDocument
KnowledgeBase:
Is multithreaded LabVIEW real-time?
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/277303856cf47ca3862565bc006c002c?OpenDocument
Good luck!
www.vartortech.com

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