This post falls in the note to self category. I always hate when I get a new system at work or home with a fresh install of Office on it and I get that first email from someone sending me a file to use/look at only to have Outlook tell me it's been blocked. I know that it's a security feature and consider it a great idea for the average user. However, everytime I encounter this I have dig all over the place looking for how to stop outlook from blocking the files I actually need.
1. Exit Outlook2003 if it is running.
2. Start Regedit
3. Go to HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Security
4. Create a new string value called Level1Remove
5. Enter in the file extensions you want to use, such as .exe or .bat
6. You can have multiple file types separated by a semicolon
7. .exe;.asp