Here's the subroutine for storing the file:

#stores uploaded files
sub storeFiles{
  my($filename, $directory, $mime) = @_; #name subroutine variables
    my $data;
    my $mime = uploadInfo($filename)->{'Content-Type'};
    open (STORAGE, ">$directory/$filename") or die "Error: $directory/
+$filename: $!\n";
    if($mime !~ /text/){
        binmode ($filename);
        binmode (STORAGE);
    }
    while( read($filename, $data, 1024) ){ print STORAGE $data;}
    close STORAGE;
}
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I'm using the following subroutine to get the filename from the form:

sub Get_File_Name{
    if($ENV{HTTP_USER_AGENT} =~ /win/i){ 
        fileparse_set_fstype("MSWin32");  #changed from MSDOS to try a
+nd fix the A:\ problem
    } 
    elsif($ENV{HTTP_USER_AGENT} =~ /mac/i) {
        fileparse_set_fstype("MacOS");
    }
    my $full_name =  shift;
    $full_name    =  basename($full_name);
    $full_name    =~ s!\s!\_!g;          # Replace whitespace with _
    return($full_name);
}
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As for the submit button. It just has a generic name of 'submit' which is not used by the script in any way to identify anything.