cockroachrhea

I don't know that I can be of MUCH help, but I can help suggest one way at least to help filter content. That's one thing that definitely goes beyond the limits of your little linksys, especially if its anything like my old one lol. But try OpenDNS, you can just go change the DNS servers in your routers interface to the OpenDNS servers, and then just let your parents deal with the interface of the website where they can choose from over 20 different kinds of content to filter. Plus its got numerous other benefits as well, and all for free. Can't beat that with a big huge stick lolz.. Then maybe you can find some other kind of software to restrict times, but none come to my head right off sadly.