Slipstream Xp and SP2 problem

Why is it that I get this message when I follow your direction for slipstreaming?
I type C:\XP_sp2>WindowsXP-KB35935-SP2-ENU /integrate=C:\WinXP and get this error message ” C:\XP_sp2 is not recognized as an internal or external operable program or batch file?
Tried eveal times.
Keith Barkley