Is it "OK" to have each of my 5 computers connect separately to the internet or should it

I have 5 computers connected to the internet with separate firewalls. 3 notebook computers and 2 desktops. I could have ONE computer be connected to the internet, then connect each to the one (which I do not have now) or is it "OK" to have each one connect to the internet separately?

Is it "OK" to have each of my 5 computers connect separately to the internet or should it only be one.internet security

How are your five computers currently connected to the internet? Are their ethernet cables all connected to a switch, and then the switch to a modem? Or is your switch actually a router/firewall? Or is your router/firewall actually a combination router/firewall + modem?

Thank you for the additional details.

Short answer:

If your situation is what I think it is, then your router is already acting like the "ONE computer" situation you are suggesting. And if it is a newer model, then it most likely has a firewall built-in (which for the daring means you don't have to run firewall software on your computers, and for the paranoid means you have an extra layer of protection). 128 bit WEP is generally considered fine for keeping out opportunist neighbors and tourists trying to leech your bandwidth. I have a similar setup with 4 desktops and 1 laptop, two of them wireless, and have never had any problems. You should not have any problems either provided you keep your operating system and defensive software (anti-virus, spyware detection, etc.) up to date. (And just to clarify, you have confirmed your 128 bit WEP settings in the router configuration by logging in via web browser? Typically this is a web address like "http://192.168.0.1" or something similar; check your router's documentation or search the router manufacturer's support website.)