This is a little something that I have been using. Modify at your discretion. It gets the file name and data from a table and prints everything out to the browser printing the name under Content-disposition so that it doesn't prompt the user to save the pl file.

On a side note: If you don't have the file name, but know the file extension, you can always replace the name with the epoch returned by time().

sub DownloadFile {

    my $id = shift;

    $sth = $dbh->prepare(qq{
        select name,data from foo
            where id = ? and
                type = 'file'
    }) or Errors("Could not prepare SQL for file $id: $DBI::errstr");
    
    $rc = $sth->execute($id)
         or Errors("Could not execute SQL for file $id: $DBI::errstr")
+;
    
    my ($name,$data) = $sth->fetchrow_array();
    my $size = length($data);
    
    print "Content-disposition: inline; filename=$name\n";
    print "Content-Length: $size\n";
    print "Content-Type: application/octet-stream\n\n";
    print $data;
    
    return(1);
}
[download]

I hope that helps!

#!/home/bbq/bin/perl
# Trust no1!