OK, here goes. After installing ad-aware 6 & updating the reference file, I launched a standard scan & it found about 40 spywares objects. I simply selected all of them & quarantined/deleted them. After rebooting, the PC was completely unable to connect to the net. The PC has WinXP ( no Service Pack installed ) & the connection is via a cable modem, connected to the network card. I looked in the Event Logs & it seems the DHCP client is unable to start. I simply went back to Ad-aware, restored the last quarantined files & rebooted. The connection worked fine. Any suggedtions ?