I have an elderly grandfather who enjoys using his computer for email and games. He is unable to effectively use more advanced interface elements like the 'start menu' in windows. Currently he is running on an Ubuntu Matchbox interface which has a single large button at the bottom for each of the programs he might be interested in using. There are stability issues with matchbox however, and it does not easily allow for remote changes.
Is there a paid or free web based service which could be run within a fullscreen kiosk-mode web browser which provides essentially a number of control buttons at the bottom and an IFrame for viewing page content (such as email client, web based-games, etc.)?