Outlook Unblock attachments

Open regedit, find the following registry key for your version of Outlook. You may need to create it.
Microsoft Outlook 2000:
HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Outlook\Security
Microsoft Outlook 2002:
HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Security
Microsoft Office Outlook 2003:
HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Security

If the the stringvalue named Level1Remove doesnt exist create it
add the extensions you want exposed to this, ie .exe;.???
Quit regedit and restart pc