By default Remote desktop connections are blocked in Windows 7 firewall. But, once you enable Remote desktop connection in first step, it automatically enables in firewall also. To make sure whether remote desktop connections are enabled in windows 7 firewall, go to Windows Firewall in control panel.
If domain setup in place on your network, allowed remote desktop users work according to group policy and permissions. By default local administrators group, and remote desktop users group have rights to connect Remote desktop. Make sure the user name you are trying to connect windows 7 is in appropriate access group.
Firefox would not let me, or really, really did not want me to, access windows update through the link provided by Brian.It was straightforward in ie, I hope it was safe.Moving on to my old xp laptop.