Cannot format Memory card

I have a 6600 which had a virus recently the Nokia care ppl removed the virus by installing the whole Symbian again, the the prob is tat now i cannot format my MMC of 64mb, it just doesnot get formated by my Cell i also tried in Ngage, & also tried to format it with help of my Digital Camera (Kodak) how do i got for it, it has become useless.

n does MMC card carry Warranty same as the Handset???

Thanks in advance