Opret ny task pane i word 2003

Jeg vil mene du lan komme langt hvis du læser det her:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dno2k3ta/html/odc_customizingtheresearchpane.asp

Hvordan går det her?

Det løser kun det at udvide research taskpane, og ikke at lave en helt ny taskpane, som jeg har fundet umuligt:

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Generally, this is not possible, no. You can add and remove some things in the "New document" task pane, and that's it in Word 2002/Office XP.

In Word 2003 SmartDocument technology has been introduced. Based on where the cursor is in a document containing XML tags, you can program in a Windows DLL what should be displayed in the "Document actions" task pane, and take actions.

> Is it possible to modify the task pane in office XP apps, e.g. add a custom
> 'page'?
> All I found on the web was an article about Office 2003's research pane, but
> that's not what I want (appears to be a web service...).
>
> I hoped for some kind of 'ITaskPaneItem'-Interface I could implement in a
> simple COM-object...