localhost0

Hello, I run a roadrunner high speed connection with a modem and no router being used. I've messed around with using both zonealarm free firewall w/ Windows XP firewall and using neither. While playing games like WoW or using Ventrilo I experience extreme lag spikes, often. At the same time while trying to load a web page it takes about 30 seconds to load, when it would normally take maybe 2. I've reset my cable modem multiple times, and still no better. Technical support from time warner was a joke. Thanks for any help you may provide, localhost0.