autorun.inf infection of pen drives

[IMO]

I have attempted to clean up my pen drives for two days. Somewhere they became infected with an autorun.inf virus. The drives show up as a file folder rather than a regular drive in my computer. I have attempted the System Restore fix, the task manager fix, reformated the drives. downloaded an autorunremover which told me they were infected and also told me that my C drive is not. Ran AVG with no viruses showing up. Also smart drive remover which said it deleted the files but they return alsmost instantly. Tried the cmd - attrib autorun.inf -s -h -r del autorun.inf etc. etc. etc. I have deleted these files repeatedly only for them to return within minutes. There is also a Recycler file folder with some files in it which I have also attempted to remove.

Thanks,