Can't connect from Mac to PC using MS Remote Desktop

Question

I have a 5 day old Windows 8.1 laptop. 
My daughter has an application called Microsoft Remote Desktop 8.0.5 on her Mac. It is Microsoft-made application for Mac, like Office.
I want her to access my computer, using this application, to access my computer from hers, even though she lives several states away (to show me how to use this computer). 
Her application asks her for: 
Connection Name
PC Name (Enter Host Name or IP Address)
Gateway (No Gateway Configured is the default), but she can add a Gateway, which then asks for a Gateway Name, Server, Username, and Password.
Username (Enter Domain\User)
Password
Resolution (Native is the Default)
Colors (32 bit is the Default)
Fullscreen Mode (OS X Native is the Default)
I found my IP addresses through the command prompt by typing ipconfig /all (Of course, nothing is actually called IP address.)
She types in the "Default Gateway" into the PC name box and she can't connect. She types in the "IPv4 address" and it can't connect. (She has tried uninstalling and re-installing the software).
The error message that she gets is "Unable to connect to remote PC. Please verify remote desktop is enabled, the remote pc is turned on and available on the network and try again."
As far as I know, I allowed Remote Access, and I set up the Windows Firewall to allow Remote Access. I have uninstalled Norton Internet Security because I could not access my settings with it installed at all, and installed AVG for free instead, which only
includes antivirus, no firewall.
What do we do? How can she access my computer to teach me how to use it?

Answer 1

Hi,
Firstly, you need to the following on your side.
1. Allow remote connections to the computer you want to access.
2. Make sure Remote Desktop is able to communicate through your firewall.
3. Find the IP address of the computer on your home network that you want to connect to.
4. Open your router's configuration screen and forward TCP port 3389 to the destination computer's IP address.
5. Find your router's public IP address so that Remote Desktop can find it on the Internet.
Allow Remote Desktop connections from outside your home network
http://windows.microsoft.com/en-HK/windows7/allow-remote-desktop-connections-from-outside-your-home-network
Then, for your daughter.
1. Connection Name: Optional.
2. PC Name: Required. Enter the public IP address of your router.
3. Gateway: No need here.
4. User Name:
YourComputerName\YourUserAccountName
5. Password: The password of
YourUserAccountName
Getting Started with Remote Desktop Client on Mac
http://technet.microsoft.com/library/dn473012
Remote Desktop Client on Mac: FAQ
http://technet.microsoft.com/library/dn473006
However, please note that if your daughter connects to your computer, you will be disconnect and you cannot see what she is doing. It is be design.
Thanks.
Jeremy Wu
TechNet Community Support