OS- Win 2000 with SP4 installed in C: drive Each time I connect to internet through dial up, the file named sfx.exe get downloaded silently to c:\ (root) within few minutes .(I notice - although I don't open any page after connection the My connection icon at the right bottom corner shows indication of data transfer) Norton Antivirus 2003 with updated defs doesn't detect this file (sfx.exe)as virus. Once the file is seen in C: drive then it can be seen running in the Ctrl +Alt +Del list (taskmanager). I can't terminate this application. The only thing I do is reboot to DOS using 98 bootable & delete the file. But the next time I connect to net I again get that file recreated at c:\. Now I have both adaware & spybot S&D installed with update & killed several entries all those were detected . But the above said problem continues . Please help to solve. I get no error message. But background data transfer reduces my internet speed & I get too late response even after double clicking "My Computer ".