According to Shawn this isn't possible:

"We haven't yet released a version of the Ink Analysis library which works with the Nov CTP of WinFX"

But it works for me! However I still can't use it, there's been no response to my newsgroup post. On the subject of unanswered queries, here are a few more I'm waiting on: Tue, 01 Mar 2005, [aus-dotnet] Opening Word XML documents in ActiveX IE control Thu, 27 Oct 2005, [aus-dotnet] Calling back to JScript from an IE-hosted Winforms Control?