not only .inf files but also suspicious virus files like .exe and RECYCLER folder ...
visit this link to know the usage
http://www.ziddu.com/download/17033028/HowtoremoveAutorunusingcommandprompt.docx.html
visit this link to know the usage
http://www.ziddu.com/download/17033028/HowtoremoveAutorunusingcommandprompt.docx.html



