Hi All, thank you very much for your suggestions. Finally I was able to burn successfully a working copy of one of the downloaded images. For all of you interested in doing the same: You need Adaptec's Easy CD Creator in order to burn the downloaded images. Probably it would also work with other problems, but I was neither successful with Nero, nor with CDR-Win. Reagrds

Take a look at http://sourceforge.net/projects/yeasoft/ - In that class library you will find a class for calculating the CRC-32. The related files are yCrc32.h, yCrc32.inl and yCrc32.cpp and you can find them browsing the CVS repository.