I´ve tried to erase a virus from my pendrive with antivirus systems, formating it, formating it from system symbol(DOS) and formating it changing from FAT32 to FAT(the only options I had in the winXP I have), all of this from my computer and from many others, but I can´t erase it!. Supose that I copy some files to my pendrive after ¨successfully delete it¨(according to AVAST)...after that, nothing happens, every thing seems to be OK, but after unplugging the pendrive, and plugging it, THE VIRUS IS THERE!!!. Please! could you give some advices... THANKS IN ADVANCE!!!!!!!!!