Editing properties of a Word document

I have an byte array of an doc file loaded in memory.

I would like to set cu开发者_运维知识库stom meta data properties of my Word document then save it back to disk. This will be done on a server so I can’t use VTSO to write an add in.

I need to do this in a 2003 word document. so I can't use open xml.

Have you seen Open XML SDK 2.0? Or you can use System.IO.Packaging API directly.