basically, the creating a new object should have worked..

$cgi = new CGI; #your basic info from QUERY_STRING or STDIN
$other_cgi = new CGI($query_string); # $query_string is the url info t
+o escape
[download]

then use $other_cgi->param($param) to obtain the params...
$other_cgi is a different object than $cgi at this point..
Hope that helps..
-Syn0