My mail widget is now available from the Widget gallery, to use it you need to download the Yahoo! widget engine (formerly known as Konfabulator) then install the widget from here:http://www.widgetgallery.com/view.php?widget=38107
you need to set your home server URL in the preferences then just log on with your username and password to get new mails displayed on the desktop.
Let me know if you find any issues, I am not certain which versions of the mail file it will work with yet, let me know if you find one that does not work.
If you want a copy personalised with your own company logo or special functionality, or one pointing by default at your server or perhaps something totally customised for a particular notes application you have then get in touch with me.