Parental controls software

My daughter has recently purchased a new laptop. She has an older desktop (gateway)with windows XP, that she wants to give to her daughter & son. At this point she wants to see that the teens stay in sights that are child safe. With no ability to download illegal content such as porn, music or movies. Is there a way to do this in windows xp? Many friends online recommended that I should buy mac spy for mac and family keylogger mac. But it seems only apply to mac computers, i don't know if it can also use on windows......Please do tell me if you have a solution to this…
Thanks so much for your time

Hi Alanis

Try this site and see if it is what you are looking for.
http://www.parentalcontrolapps.com/windows-xp/
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Some paid anti-virus programs include parental controls. I'm not a big fan of Norton but that is what I installed on my niece and nephews machine to block bad sites and report on suspicious activity.

Thank you so much for your advice, you are so kind and helpful.

You can try some anti virus systems, like Kaspersky Internet Security, Dr.Web Security Space or some analog of ESET.. All this applications are shareware and has trial period to try it.