This has been a tough one for me. The PC is an IBM ThinkPad T42. Trend Micro Internet Security was crashing regularly. Their tech support suggested a deinstall and reinstall of the 2009 version. During the uninstall, internet connectivity was lost. Diagnosis suggested that the Network Adapters were not there. However, they are there and indicate that they are active and functioning properly. Going back to a restore point gave me internet connectivity, but each time the previous Trend Micro was uninstalled, connectivity went away, both hardwire and wireless adapters. Now the big problem...Trend Micro had me try so many things that now I've lost a good restore point (aaahhhh!). Any ideas on how to approach this?