I change the Multileader style settings for AutoCAD 2013:
...
// mleaderStyle.TextAttachmentDirection = AcDb.TextAttachmentDirection.AttachmentHorizontal; // Horisontal attachment
mleaderStyle.TextAttachmentDirection = AcDb.TextAttachmentDirection.AttachmentVertical; // Vertical attachment
mleaderStyle.ExtendLeaderToText = false; // Extend leader to text
...
How can I do it for AutoCAD 2009? I can't find the similar properties in MLeaderStyle, or in AcadMLeaderStyle (COM).