Do I need my class.sys file? That file I brought from home that the work virus-checker caught prompted me to get an updated virus CD from work to update my home machine, and it found a virus in my class.sys file which it then deleted in a failed attempt to Clean it. Things were fine, I had no virus on my home computer according to the latest update (last week), I created another file and lo and behold, when I got here to work there was that creepy crawly icon, and I still had the virus the new checker said wasn't there... I almost didn't get to do my final on time! I had to do shenanigans, and now I don't know if my home computer is safe or not. Also, I have no class.sys file, and things are getting funky in the operating system. Which I may need to reload anyway, because of my network icon having no properties... but what about that class.sys file?