i can't figure out how to remove this topic, so i'll just answer my own question...
i tested my DLL file from a C program and it works, but it crashed with DB. The problem (not a bug) is that C can have functions that accept any type of parameter. Since the type of parameter was unknown at the time of the call, DB could not locate a matching function. The solution, of course, was for me to "fix" the DLL to handle only one type of variable instead of any type. Sorry if i confused anybody with my simple question
