[misspopular]

I think my son has been viewing inapproprite sites on the internet. He has deleted the history. Is there an easy way to undelete or vew the history? I have heard about index.dat but have heard they are near impossible to read. Is there an easier way?

[Curlyben]

Sorry to say, but once it's deleted it's gone for good.
There are some applications that claim to be able to undelete, but I have yet to find one that actually works for internet history.

[Lula001]

You could always download a free filter, just make sure that you choose a password that he won't be able to guess

[SC-tbfd]

Try browsing through the cookies. He may not have deleted those and they can give you a clue. The filter is a great suggestion to block offending sites . If you're more interested in catching than in preventing I think you can find software that will log web usage quietly in the background (sort of keeps it's own history)

[NeedKarma]

Keep the computer in an open area. Be around when he's on the computer.