Simple, Free Web Remote PC Control?

MeatballCB writes: Hey folks. Being the 'technical' guy of the family, I often get calls from friends and family members when they're having PC issues. Most of these folks are not technical, so trying to troubleshoot problems over the phone can often be a challenge. Anyone know of a simple to use, and preferably free, service that would allow for remote viewing/control of their PC's. I know there's WebEx and GoToMyPC, but I hate to pay for something I'd use once every two months. I also know about VNC, but trying to walk someone through opening up ports on their router that thinks their Internet is broken when their homepage gets changed is not realistic.

Anyone know of anything that would be easy to set up and use?