My entire knowledge on COM interaction and development has been attained from the articles I have downloaded from MSDN. These have been very informative however I am still not as comfortable as I would like to be with the subject, as in I still reference these articles all the time when I write COM stuff. I was wondering if there was the 'good book of COM' floating around out there that I have missed. I have seen Inside COM and Inside OLE referenced in the articles I have but I am unsure of how good they are. I really am looking for something for COM like Petzold's book is to Windows. Any suggestions will be greatly appreciated.