bigjoe11a, did you try reading the perldoc for CGI that gryphon linked to? I did, and I found the following blurb one or two screens down:

To create multiple cookies, give header() an array reference:

$cookie1 = cookie(-name=>'riddle_name', -value=>"The Sphynx's Question
+");
$cookie2 = cookie(-name=>'answers', -value=>\%answers);
print header(-cookie=>[$cookie1,$cookie2]);
[download]

So for your specific example, try print $cgi->header( -cookie => [$cookie1,$cookie2,$cookie3] ).