hi, What I created is a sample presentation with a couple of buttons "remove file" and "save file". The first button "remove file" deletes a file and the second button "save file" creates a file my hard drive. I'm using really basic actions cmd /c "del c:\dir\filename" and cmd.exe /c "echo hello > c:\dir\filename" Yes you do see a flash when the command window opens for a few milliseconds. I spent maybe 2 minutes creating this presentation, and spent no time trying to make a destructive presentation. I'm not going to delete/modify actual files to verify that it can do damage. It's not a virus, more like a trojan. In a trojan presentation (if possible), the button name might be "print" and when clicked it would delete files from your hard drive or some much more sophisticated. I am not aware of any AV software that would detect such a trojan presentation. I admit I'm new and clueless as to how members and support staff communicate on this forum. I'm not upset, and hope no one else is either. I apologize to anyone that was offended by my questions or raising undue alarm. I was hoping somebody from wnsoft support would jump into this thread, but apparently they are all working on the latest beta (which is great by the way). tom95521 (my postal zip code in N. California).