If you need to convert PDF files to DOC, OOXML, ODT, RTF or HTML in your application, then you should try Aspose.Recognition. It is a simple to use .NET class library that is available for any .NET version and supports both x86 and x64 modes.

See the product homepage for more info http://www.aspose.com/categories/file-format-components/aspose.recognition-for-.net/default.aspx

And yes, it is BETA. So feel free to post feedback and feature requests in the support forum http://www.aspose.com/community/forums/aspose.recognition/441/showforum.aspx!