How to retrive Outlook default signature
The Outlook signatures are stored in the %APPDATA%\Microsoft\Signatures\ folder in text, RTF and HTML formats. In case of multiple signatures, the default can be found through Word automation. Tested in Outlook 2003 and later.
Get rid of annoying security alerts in Microsoft Outlook
The Advanced Security for Outlook
from http://www.mapilab.com/outlook/security/ is free Outlook add-in that allows end-user to take control over Outlook security alerts.
Outlook - Add Color Coding to Calendar Items
The Outlook model doesn't provide access to the Label property, but it can be retrieved/changed via CDO 1.21.
Requires Outlook 2002 or later. Tested with Outlook 2003 only.
Based on http://www.outlookcode.com/codedetail.aspx?id=139