Parental Controls

I need advice.
Can anyone recommend good and cheap (read:free or as close to it as possible) parental control software? I want to be able to limit what he can get to as well as the amount of time he can spend on the computer (limit has to be in amount of time as opposed to a given range; 2 hours as opposed to from 4:00 to 6:00). I also want to be able to get a log of his activity. My son is 16. He's going to view porn. That's ok. I just don't want him to spend all day on it and I want to put some limit on the level of porn. I also want to stop him from downloading junk onto the computer. There's lots of internet filtering software out there. However, I was hoping someone could give me an actual recommendation to save me the trouble of downloading and testing them all.
Oh and by the way, the computer he will be using has IE7 and Firefox. I tried using the content control in IE and found it decidedly lacking. I had no problem accessing all levels of porn even after putting the controls in place. The Firefox control seems to work better. However, it doesn't do everything I need it to.
So any recommendations?
Thanks guys!
Can anyone recommend good and cheap (read:free or as close to it as possible) parental control software? I want to be able to limit what he can get to as well as the amount of time he can spend on the computer (limit has to be in amount of time as opposed to a given range; 2 hours as opposed to from 4:00 to 6:00). I also want to be able to get a log of his activity. My son is 16. He's going to view porn. That's ok. I just don't want him to spend all day on it and I want to put some limit on the level of porn. I also want to stop him from downloading junk onto the computer. There's lots of internet filtering software out there. However, I was hoping someone could give me an actual recommendation to save me the trouble of downloading and testing them all.
Oh and by the way, the computer he will be using has IE7 and Firefox. I tried using the content control in IE and found it decidedly lacking. I had no problem accessing all levels of porn even after putting the controls in place. The Firefox control seems to work better. However, it doesn't do everything I need it to.
So any recommendations?
Thanks guys!