I've been stuck on the same 3 problems for several days now... no one seems to know the answer either, since no one's replying to my posts...

"what interface to implement for image Previews?"
http://www.tek-tips.com/viewthread.cfm?qid=911903

"very odd IExtractImage::Extract() behaviour"
http://www.tek-tips.com/viewthread.cfm?qid=911638
https://www.gamedev.net/community/forums/topic.asp?topic_id=268479

"DllUnregisterServer() returning 'access denied'"
https://www.gamedev.net/community/forums/topic.asp?topic_id=268565

ARGH!!!