I use Microsoft Security Essentials and I'm quite pleased with it. I should mention that MSE version 2 is out. Those using the earlier version will not be notified automatically. They'll need to update manually. Cheers, PW. P.S. One can create a test virus file by copying this text into a file using NotePad, then changing the filename extension from .TXT to .COM X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H* From eicar.org/anti_virus_test_file.htm Test