As part of a web-application I'm building, I need to be able to scan the remote user's machine for viruses / malware, before they can continue using the web-application ... something like the McAfee On-Demand Scan.

I'm assuming that ActiveX would be the way to go (since all the On-Demand scanners of the antivirus companies seem to be ActiveX-based).

I'm a bit stuck on how to solve this problem. I'm hoping I don't have to rustle up something from scratch.

Does anybody have any ideas ? Is it possible to integrate some already available component into my code to do this ?

Do let me know if there's more information you need.

Regards,
Sonal.