>>I downoladed all files but can't find that DLL
>
>hmm, they might be in
>http://www.digitalcheck.com/zip/DCC_Drivers.zip


Hi Raphael,

The DLL is not there. I think it comes with the software when you buy the equipment. However I found the API Document that mentioned it comes with C sample and VB sample.

I believe David Frankenbach is correct in this case. You might want to try to pass by refference and filled in the variable to pass with chr(0) or space with the same length as it construct in VB. One more thing is that the filename must be zero terminated and put in the INI file: "FileNamesTerminated=1" without quotes. That's what the Doc's said

Regards