DECLARE INTEGER ShellExecute IN shell32.dll ; 
  INTEGER hndWin, ; 
  STRING cAction, ; 
  STRING cFileName, ; 
  STRING cParams, ;  
  STRING cDir, ; 
  INTEGER nShowWin

cFileName = "c:\Program Files\Winzip\Winzip32.Exe" 
cAction = "open" 

ShellExecute(0,cAction,cFileName,"","",1)