Acer RC111 - Manual (Page 55)

55
HomeGroup
A HomeGroup makes it easier to share pictures, music, videos, and
documents with other computers running Windows 7. The HomeGroup
is connected with a password, which you can change at any time, and
you can always choose what you want to share with the group. Only
those people who belong to the HomeGroup can see shared files and
folders. Other people can't change the files that you share, unless you
give them permission to do so.
After you purchase or install the server, you can create a HomeGroup
for your computer network. If a HomeGroup already exists, you can
join it. After you create or join a HomeGroup, you can select the shared
folders that you want to share with the HomeGroup. You can prevent
specific files or folders from being shared, and you can share additional
folders later. You can leave a HomeGroup at any time.
Note: You should only use the HomeGroup tools available in the
Windows Home Server 2011 Dashboard to manage your
HomeGroup. If you use the HomeGroup tools that are available in
Control Panel, you can experience problems when sharing files
and folders.