>I have a problem getting the GetWindowsDirectory function to return the Windows dir in VFP6. It keeps returning 0. Can anyone help me with the correct syntex.

Try the following:

FUNCTION GetWinDir
DECLARE INTEGER GetWindowsDirectory IN Win32API ;
  STRING  @cLocation, ;
  INTEGER nSize
LOCAL cLocation, nSize

cLocation = SPACE(256)
nSize = GetWindowsDirectory(@cLocation, 256)

IF nSize > 0
   *
   * Got it - it's the size of the return
   *
   cLocation = LEFT(cLocation,nSize)
ELSE
   *
   *  An error occurred when retrieving the value - return the null string
   *
   cLocation = ''
ENDIF

return cLocation