Brian Dewey has created a OneNote PowerShell Provider PowerToy which uses the power of scripting to get to OneNote data.
He includes several scripts, such as the “Get-OneNoteDigest.ps1″ which sends email when pages in a shared OneNote notebook change.
Also check out a more recent post about Technology: Todo.txt, PowerShell, and OneNote and how he can use his TodoTxt scripts to manipulate his list inside OneNote!

I’ve been waiting awhile for this to get listed here. Incredibly powerful – I can’t wait to see what great solutions people who use this develop.
John Guin
Is this still a good option for OneNote 2010?
I savor, cause I discovered just what I used to be looking for. You have ended my four day long hunt! God Bless you man. Have a great day. Bye
The correct link for “Technology: Todo.txt, PowerShell, and OneNote” is http://bdewey.com/?s=onenote