Your anti-virus software sounds like its paranoia level is tuned a little high. A .vcf file is a text file. The image is ... an image, no more harmful than other images in email messages.
See my response in your other thread on how to deal with the signature issue.

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Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
> How do I get rid of the vcf file which goes with the electronic
> business card?
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>
> Thanks... Ken