need help asap. Installed winxp on my son's pc. everything was working fine-had internet and email through a network with linksys router and dsl modem. then installed service pack 1 and lost my network connection. It shows the connection and other computers on the network but cannot access internet,mail or shared folders. If I un-install service pack 1-it works fine again but then cannot run certain programs like itunes. Need help asap leaving soon for military deployment overseas and need to have fixed before I leave !!