It's hard for me to deduce the ref type of $row[0] ( I'm not an Access expert), but I'm guessing it returns an array or list, and it prints it out. You could do a few tests, like the following untested code. At least it will show you how to debug the output. Also see fetchall_arrayref with slice and row count for a way to force array context.

while (my @row = $queryHandle->fetchrow) {

my $reftype = ref $row[0];

# now see if it's an array, if so see it's scalar count
if ($reftype eq 'ARRAY'){
    my $count = scalar $reftype;
}

# now loop thru all the array by $count
foreach my $cnt( 0.. $count){

     $dude2->insert("end", $row[0][$count] );
     ...
     ....
}
.....
.....
}
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