I recommend "Effective Techniques for Application Development with Visual FoxPro 6.0" by Jim Booth and Steve Sawyer from Hentzenwerke Publishing (http://www.hentzenwerke.com/index.html) ISBN 0-96550-937-0

>can anyone tell me if there are books special about developing com objects, servers or dll's? If so, where can i get such a book?
>
>I ask this because i'am interested in how to create and use com objects, mostly dll's. I'am trying to learn it myself but it takes far to much time. So i will be glad if someone can tell me how to get information about this.