GRC is a software for the gmail users which allows them to command their pc in a remote way, sending only an email to their Gmail account (from whichever computer or hand phone). GRC does not require any installation operation, you must only Extract the file from the zip compression and execute the GRC.exe Insert username and password of your gmail account and click on Sign in... GRC will wait instructions. Each 60 seconds it will check if new instructions have arrived throught email.