;====================================================
; IsNT - Returns 1 if the current system is NT, 0
;        otherwise.
;     Output: head of the stack
;====================================================
Function IsNT
  Push $0
  ReadRegStr $0 HKLM "SOFTWARE\Microsoft\Windows NT\CurrentVersion" CurrentVersion
  StrCmp $0 "" 0 IsNT_yes
  ; we are not NT.
  Pop $0
  Push 0
  Return

  IsNT_yes:
    ; NT!!!
    Pop $0
    Push 1
FunctionEnd

;====================================================
; IsNT - Returns 1 if the current system is NT, 0
;        otherwise.
;     Output: head of the stack
;====================================================
Function un.IsNT
  Push $0
  ReadRegStr $0 HKLM "SOFTWARE\Microsoft\Windows NT\CurrentVersion" CurrentVersion
  StrCmp $0 "" 0 unIsNT_yes
  ; we are not NT.
  Pop $0
  Push 0
  Return

  unIsNT_yes:
    ; NT!!!
    Pop $0
    Push 1
FunctionEnd