Hi all, new here. I replaced my Linksys BEFSR41 with the WRT54G (ethernet with wireless disabled). I only have one older Pentium II 300MHZ computer hooked to the internet through a Linksys cable modem and it has always worked really well. I was happy with what I had until I had to update my virus scanner and then everything worked too slow. I couldn't customize the McAfee Vscan the way I liked and I felt that the virus scanner and firewall had become my main app. I uninstalled the McAfee software and software firewall and then installed AVGFree antivirus. I feel like I have a new computer now-- its fast and responsive again. I bought the WRT54G because I think the built-in firewall is all I need-- I know that a software firewall would be even more protection. However, I also want to enjoy using my computer. Some people I have talked to have been critical of my decision to rely on the NAT and SPI alone for a firewall; am I making that bad of a decision? I know people that use software firewalls with only a cable modem and they think that is perfectly OK. My wife and myself are the only users of this computer and we are pretty careful about what we are doing. I run AdAware regularly and scan the harddrive regularly. The way some people talk you'd think I was committing a sin not running ZAlarm or McAfee or Norton firewalls. If I had a more powerful computer I could probably run McAfee VS 9 and the software firewall that came with it and not take a performance hit. Am I making such a big mistake? My computer is not a spammer and I think I would catch it if that did happen (never has yet).