Yesterday, not for the first time, our internet security administrator contacted me again, and told me that I would have viruses on my PC, all of them being .adf files.

Don't know why, but McAfee at work detects a lot of viruses among the .adf files on my external disk. I don't have any problem at home, so I don't know if it's really infected or not.

Whatever, what could happen? You don't open the .adf file on your PC anyway, the only thing you do is to run it through an emulator. Question is, could that in any way harm your system?