cache control problem in tomact 3.2.1

[niraj]

hi All

i have a global include file . i have put to header in the file as given
below.
    response.addHeader("Cache-Control","no-cache");
    response.addHeader("expires","0");
when i work with tomact + IIS    both header works fine.
but when only tomact is running  the these headers doesn't work. is this is
the bug in tomact ?
any solution please help.
i am using WINNT and Tomact 3.2.1 and IIS 4.0
thanks in advance.

niraj