>I have found some further information on the DLL files regarding constant definitions. There are two C header files which contain all the constants used by the DLLs which I have merged into one file. The help system that came with the DLLs tells you where to get these but if anybody wants just the constants, I can eMail these to you.

I, for one, would love to get this information from you. But you might be better served by providing a ZIP file for posting in the files section here. Many thanks for all your efforts on this.