I cant believe I had to run over here and post this reply here. Roadwasher, they deleted your post again

MrUnix has the right idea. You need a Security Appliance that handles Upstream HTTP PROXY Request with content filtering.
The downside is there isnt to many options that will do that for you "Out Of The Box" for a Home User setup and is free.
So the only 2 options I can think of off the bat that will provide this functionality is
Astaro and IPCOP. Astaro is my first choice, I sell it, I use it both home and office, and swear by it. You can get a free home licence with Astaro minus the Antivirus/Spyware Protection.
IPCop will do the same thing, it will just take a bit more work to get the content filtering setup.
Aaron