Clarify what you're seeing. What appears as an attachment and where?
What Outlook version?
List your steps more clearly.

Signature
Russ Valentine
[MVP-Outlook]
> Every time I open a new email to type there a contact (the same one)
> appears
> as an attachment. I have deleted the contacxt from my address book but it
> still appears everytime
Check your signature settings in Tools | OPtions | Mail Format. It sounds like you have your signature set up to include a vCard .vcf file.

Signature
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
> Every time I open a new email to type there a contact (the same one) appears
> as an attachment. I have deleted the contacxt from my address book but it
> still appears everytime