use Class::CGI
  handlers => {
    customer => {
      handler => 'Class::CGI::Customer',
      fields  => [qw/
        first
        last 
        address1
        address2
        email
        city
        state
        zip
      /],
    }
  };

my $cgi  = Class::CGI->new;
my $cust = $cgi->param('customer');
my $zip  = $cgi->param('zip');