Im operating a computer classroom. We have 3 classrooms and 20 PCs in each of them. They are being updated now to SP3. Almost everything worked out fine…but 5 computers have now problem connecting to the internet. LAN is working perfectly… I can connect to the others computers in the classroom and to different network places but not to the internet… I have treid uninstalling SP3… uninstalling the LAN card and reinstalling it…checked the network parameters…almost everything… any suggestions?