It all started last night maybe as a result of me running a program that was mislabeled by norton as a trojan on my sister's computer. now every single computer on the network, excluding mine, is without internet access.
interestingly enough, you can still access google by using its IP instead of its domain name, but both IE and Firefox are affected as well as Outlook.
my computer does run different software [Zonealarm Pro, AVG, Ad-Aware and XP pro] whereas theirs run Zonealarm Free, Norton, and XP Home
any help would be great!