>Can someone recommend a parental guardian software? There are so many out there and I have never had the need for it until now. 17 year old son and well, you know the rest of the story...
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>Any freeware that'll do it? I don't want something complex or with lots of bells and whistles, just something that logs Websites visited. That's all I need.

At 17 he should be mature enough to filter his own Internet experience and to handle anything that may be encountered unexpectedly. If he's at all technical he'll almost certainly be able to circumvent any control or logging you want to do. If not, he'll do his computing elsewhere.