Workable Option 2: TeamViewer for Noncommercial Use
TeamViewer makes its commercial remote control suite available free for noncommercial use. I wish I'd known about it before I purchased the GoToMyPC license because it works more or less the same way and, as long as it's not used for business, is absolutely free. (By contrast, the VNC Free Edition lacks encryption and doesn't offer all the bells and whistles that the company's commercial, for-a-fee version delivers quite handily.)
In fact, I can even use TeamViewer to access my Macintosh notebook from my Windows PC, and vice-versa, or use a Flash-capable browser on any platform to access any computer that has the TeamViewer software installed. It even works with iOS 4.x and 5.x devices (iPhone, iPad, and iPod Touch).
Figure 2 shows a screen capture from my Windows 7 i7 PC with a TeamViewer window open to my MacBook Air.
Figure 2 The MacOS desktop inside a Windows screencap always makes me do a double-take!
The TeamViewer software also works well on Dad's machine. All he has to do is to access his Teamviewer account online, and the software does the rest for him (and me). Also highly recommended!