This article will guide you to the answer:
http://blogs.techrepublic.com.com/msoffice/?p=112
Outlook 2007, Outlook 2003, Outlook 2002 and Outlook 2000 SP3 (but not Outlook 98 or earlier Outlook 2000 versions) allow the user to use a registry key to open up access to blocked attachments. (Always make a backup before editing the registry.) To use this key:
1. Run Regedit, and go to this key:
HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Security (change 10.0 to 9.0 for Outlook 2000 SP3 or to 11.0 for Outlook 2003, 12.0 for Outlook 2007 )
2. Under that key, add a new string value named Level1Remove.
3. For the value for Level1Remove, enter a semicolon-delimited list of file extensions. For example, entering this:
.mdb;.url
would unblock Microsoft Access files and Internet shortcuts. Note that the use of a leading dot was not previously required, however, new security patches may require it. If you are using "mdb;url" format and extensions are blocked, add a dot to each extension. Note also that there is not a space between extensions.
If you are using this registry entry, a glance at Help | About Microsoft Outlook will show Security Mode: User Controlled above the license information.
To force users to save *.zip files to the hard drive before opening, add .zip to the extensions step 3.
[b]For future reference:[/b] When posting a question, be sure to post it in the [u]Questions[/u] forum rather than the Discussions forum. Many do not read the Discussions forum and taking this step helps to insure that your Question gets the attention it deserves.
