Millennium OS has many links/URLs:

Millennium OS Group at Yahoo!

Data Components Home Page

Unmaintained Millennium OS Alpha - Home Page

File Storage Site

Arachne OS Yahoo Group - The Maintainer helped me with M-OS

RUN DOS RUN! Website - Has links to GUIs including M-OS

My email: tlsuess[at]suessweb[dot]com
(Please replace '[at]' with '@' and replace '[dot]' with '.')