We Are Having An Email 'posssible Virus'

Your Question Edit Question Our Bellsouth email address account seems to have a possible virus. I have run 2 forms of virus protection with nothing detected and "bogus" emails still are being sent. The emails are going through our entire address book.. I there any way you can assist us with this or will I need to completely rid myself of this email address. Our desh top hard drive crashed a couple of months ago which required us to purchase a new computer. This seemed to fix the problem but recently this issue has arrived again and the problem has resurfaced. Please advise us what we need to do to correct this. Thank You. R/ Marshall Crew