Here it is:
$name="cookie_name";
$value="cookie_value";
#$cur_date = "Tue, 28 Mar 2000 06:10:23 -0500";
$expires_date = "Fri, 31 Mar 2000 13:49:23 -0500";
$path = "/";
$domain = ".tripod.com";
print "Content-type: text/html\n";
print "Set-Cookie: $name=$value; expires=$expires_date; path=$path; domain=$domain\n\n";