Thanks Nakkali for starting this thread..I got a chance to ask some questions to sajha computer experts too. My problem is I have two Win98 operating in my system , I accidently removed system files from the first one resulting into complete failure in loadin all the programmes ( a screen with my wall paper n nothing more, not a single Icon)...then I installed windows98 again..now the system works perfectly like it was before ...but I am worried abt overlaping files..do they posses any threat to my computer in the near future??? as the files of both the systems r there they r taking unnecessary space in my hard disk..can anyone suggest me how to remove the ones from the previous intallation. Secondly I am posting my hijackthis log file in my next posting....I want some experts to identify the spies n viruses as I am afraid of deleting them by myself due to my insufficient knowledge....ur help is Higly appreciated. THNKSSS