Call app from VB and get results

Hi, I have a C++ command line app which when executed returns an integer value. I am trying to run this app from VB and display the return value and thought I could do something like:
retval = Shell(“C:\test\dssLEN.exe”, 1)
but it just returns a program id. Is there a way to get the integer value returned from the application?
Thanks,
Ron Utsogn