Since your configuration data isn't all that big of an array, I'd say make it more maintainable, robust and readable by putting the data into a hash instead of an array, i.e. for each configuration file line:

my %lookup_param_by;
($name, $value) = split /=/, $_;
$lookup_param_by{$name} = $value;
[download]

Not sure how you want your form to be laid out, but to print the contents, you could have

foreach (keys %lookup_param_by) {
    print "$_ $lookup_param_by{$_}\n";
}
[download]