How to Remotely Troubleshoot a Friend’s Windows PC Without Any Extra Software

Windows offers a few built-in tools for performing remote assistance over the Internet. These tools allow you to take remote control of another person’s computer so you can help them troubleshoot it while you’re on the phone with them. They work similarly to Remote Desktop, but are available on all editions of Windows and are easy to set up.
by Chris Hoffman via How-To Geek