I believe this is what you are looking for. Putting a 1 as the first arguement tells system to not wait. tye posted this gem some time ago. 
system(1,dbeng9,@engstartargs ); # don't wait for return

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JamesNC

In reply to Re: System Function...script does not move until process ends. by JamesNC
in thread System Function...script does not move until process ends. by curtisb

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