Remote Desktop (RDP) is technology built into Windows XP Professional and higher that allows you to remotely connect to other computers over a network. Before you can remote in to a machine running Windows 8, you need to enable it first. Here’s how.
At the Metro Start screen, use the Keyboard Shortcut Windows Key + R to bring up the Run line on the desktop. Type: control panel and hit Enter.
Control Panel opens. Click System and Security.
Under System click the Allow Remote Access link.
Select Allow Remote Connections to this Computer, and “Allow Connections from Computers Running Any Version of Remote Desktop” is selected by default. Click OK.
Now you can use Remote Desktop on another Windows computer to remotely control Windows 8.
If you’re testing out Windows 8 on another system on your network, you might want to try out the Remote Desktop Windows 8 App. It’s the same RDP protocol, with a different look and feel.
If you’re not worried about eye candy in Windows 8 or other versions, check out this article on speeding up RDP connections. This is especially handy on older hardware on legacy networks.