Windows on the server side (the one you want to control, not necessarily a server)
- right click on My Computer > Properties > Remote tab
- ensure that remote Desktop "Allow Connections" is selected
Windows on the client side
- (Win 7 / Vista) All Programs > Accessories > Remote Desktop
- (Win XP) All Programs > Accessories > Communications > Remote Desktop
While administrators of Linux boxes generally will connect using ssh, to use a command line interface, the demand for GUI based remote control has increased. So here are some instructions for configuring VNC on Linux if ssh & cli are not enough for you (note the instructions do not include ssh tunneling of VNC, see future posts for tunneling):
Linux server & client instructions Configure Fedora 12 - 13 VNC remote access
For a windows client download and install VNC Viewer it is a stand alone application.