I have 2 surfaces in DirectX. Both are the same width and height. What's the fastest way to determine if both the surfaces have exactly the same image? Is there some hardware acceleration available to pull off something like this?

Outlook 2007 uses the MS Word editor for composing/viewing emails. I'm trying to get a handle to the Word object within outlook and have most of the code. There's one line that's giving me an error and I'm not sure how to get around it. The compiler refuses to compile because of the line which says QueryInterface. The error is "error C2787: 'MSWord::_Docum ent' : no GUID has been associated with this object". I've been breaking my head over...