** mztolo 2006
** ini cara buka file excel pake Windows Scripting Host  
oWsh = CreateObject("WScript.Shell" ) 
owsh.Run('c:nm_file.xls' ) 

** yg ini kalo buka pake Office Automation 
oExcel = CreateObject("Excel.Application" ) 
oExcel.Workbooks.Open("c:nm_file.xls" ) 
oExcel.Visible = .T. 

** kalo word bisa spt ini 
oWord = CreateObject("Word.Application" ) 
oWord.Documents.Open("c:nm_file.doc" ) 
oWord.Visible=.t. 

** berikut ini jika pake Win32API :)
DECLARE INTEGER ShellExecute IN shell32.dll ; 
  INTEGER hndWin, ; 
  STRING cAction, ; 
  STRING cFileName, ; 
  STRING cParams, ;  
  STRING cDir, ; 
  INTEGER nShowWin 

cFileName = "c:\document1.doc" 
cAction = "open" 
=ShellExecute(0,cAction,cFileName,"","",1)