I replaced my linksys wireless router with a new one and the latest model/software. Everything is running beautifully now..

Tomorrow I need to go to best buy an buy a new linksys G router. Mine is about dead. It can't maintain connection between the cable modem and the computer. I can connect directly through the comcast modem but I don't have the firewall protection. Now I'm afraid of hackers. I hate norton and won't install it on my computer.