Just to add to MUBA's excellent advice, if you are going to use CGI;, then use CGI! :)

$| = 1;
use CGI qw(:standard);

print header,
    start_html,
    p('Hello World'),
    end_html,
;
[download]

http://www.google.com/search?q=site%3Ahttp%3A%2F%2Fstonehenge.com+%22server+push%22

Or read what the CGI.pm docs have to say about it: #Server Push

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)