dczwin32.exe is a Trojan W32.Rbot-BFW. dczwin32.exe opens a back door on IRC channels. dczwin32.exe spreads via open network shares. Related files: %System%\dczwin32.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill dczwin32.exe process and remove dczwin32.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.