|Hi adamthepostie & Mesich,|
If you mean Outlook follow the instructions at the link below.
Why I cannot view the pictures within email using Outlook 2003?
If you mean Outlook Express, open Outlook Express, click Tools>Options>Security tab and uncheck the "Do not attachments to be opened or saved which potentially could be a virus", click Apply/OK.
It is good practice to have a Antivirus Program running in real time mode.