I have a fix for this if anyone is interested. I thought it would be hard, but it's actually pretty easy.
in /skin1/main/history_order.tpl:
change the original code (you'll have to find it, I just commented it out):
to
Code:
{*if $usertype ne "C"*}
{$lng.lbl_order_notes}:
<TEXTAREA name="notes" cols="60" rows="5" {if $usertype eq "C"}READONLY{/if}>{$order.notes}</TEXTAREA>
{*/if*}
Then it will show up on the Customer's Order. To change "Customer Notes: (not visible to customer)" just start webmaster mode, look up the order, click the title to change the label.
Hope that's somewhat clear...
