Hi, I am implementing an Anti-virus in c#.And i am going to write last module.Please help me by providing some information so that i complete my project. My question is 1)I want to implement an boot time scan engine(scan HD for files) which will run before log-in screen.when no program is running.For example....Avast Anti-virus boot time scan. 2)Please if you know any article or source code for that purpose please share. Thanks in Advance Regards, SSP:sweat: