NIS 09 not detecting a suspected threat

i need help.  I have a virus or something on pc but NIC 09 couldn't detect it.  I know it was there because everytime i went online it would start sending hundreds of emails.  I restored my harddrive and it was still there.  I tried to restore it again using the disc and it said error reading disc.  now i just get a cursor on a black screen.

 

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Message Edited by TomV on 04-27-2009 12:29 AM