Never got into "Second Life", but this thing caught my eye (more "chatroom"-esque than "MMORPG"-esque) ...
Originally posted by GoogleBlogIf you enter a Lively room embedded on your favorite blog or website, you can immediately get a sense of the room creator's interests, just by looking at the furniture and environment they chose. You can also express your own personality by customizing your avatar's look, showing people who you are without having to say a word. Of course, you can chat with each other, and you can also interact through animated actions.
Of course, I might as well use this opportunity to pimp my own room (lively.com) ... For some reason, the ability to post images on various posters/picture frames decorating your room is currently turned off (last time I checked anyway), but showing off YouTube clips is still intact.
Sentinel.SYS does appear to be a valid Windows process. I don't know whether you have to have it running, but it doesn't appear to be harmful. It's made by Rainbow Technologies. It looks like the software that runs a hardlock dongle: