IE cgi caching

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I'm trying to prevent IE from caching my CGI program. Right now I'm using the standard methods in CGI. I've tried the following:

print header(-expires=>'-1d');
[download]

and

<META http-equiv="Expires" content=" Thu, 25 Jul 2002 08:12:13 GMT">
[download]

and

<META http-equiv="Pragma" content="no-cache">
[download]

Can anyone help?