Homegroup sharing - desktop

We have a 2-computer homegroup (both are laptops using Windows 7) and can access each others' files with no problem. I assumed, however, that we would be able to see one another's desktop. That doesn't seem to be possible.
Am I missing something (I'm a computer novice).

File sharing and RDC "Remote Desktop Connection" are two different things.

For RDC you need to set it up first. The tutorial below shows you how.
http://www.sevenforums.com/tutorials/3922-remote-desktop-connection-rdc-network.html?filter

Sometimes it's easier to set it up using team viewer.
http://www.teamviewer.com/index.aspx