Perhaps I should have been more clear. use CGI::Carp qw(fatalsToBrowser); does not replace use CGI;. I suspect that either you used it in place of use CGI; or you are trying to assign new CGI before the use CGI; statement. Either of those will produce the error you describe. Try the following:

#!/usr/bin/perl -Tw
use strict;

use CGI;
use CGI::Carp qw(fatalsToBrowser);

my $query = new CGI;

# the rest of your code goes here.
[download]

Also notice the -T switch on the command line. That's for "taint checking." You're going to hate this, but you really need to read perlsec and understand what's going on. If you start learning this early, you will save yourself a lot of problems down the road.

Cheers,
Ovid

P.S.: Don't think of yourself as a bad Perl programmer, think of yourself as a new Perl programmer. There's a difference :)