Most of my users are still using Outlook 2000. Sad, but true. With NOD32, right clicking on an e-mail, click View Attatchment, and then clicking the attatchment, brings up an illegal operation in module unknown. This happens even with NOD disabled. I'm not sure how many users actually go through these steps to look at attatchments, but if one does it, i'm sure others do. What are some other good corporate antivirus alternatives? Right now I'm using Trend Micro's corporate suite.