I put a testing patch (which introduces Jesse Allen's dib engine in current tree) on bugzilla - Bug 421 page. The engine was tested on autocad (many display problems, but noticeable speedup) and with Excel (quickly, works, display problems in dialogs).
The patch is just for testing purposes and to get some advice on how to proceed. http://bugs.winehq.org/show_bug.cgi?id=421 Ciao Max
