Has anyone used this? My venerable router and firewall has finally died, and I was looking for a replacement when I saw this. I can't afford the hardware versions (K!?) but the express version looked interesting: an opensource firewall software and OS in one that you install onto an old PC and then use that as the router. It only needs a basic Pentium with 128MB of RAM, which I definitely have (see my username). \n\nThe problem is that I can't find any reviews of it, or any advice on configuring or setting it up, which makes me a bit reluctant to go further. If anyone has used this, or can recommend another network router with firewall and Mac filtering, please let me know. Everything I've seen that is really good is also really expensive.