Calling VB6 DLL methods from Java

We have a DLL written in VB6. We don't have the sourcecode of it, just the specifications for the methods signatures. The DLL contains 9 methods. We need to be able to call these methods from Java code. Suggested platforms: - JNI; - JNA; - any other platforms suggested by the developer. In the doc from the attachment there is the list of methods that need to be called as well as other specifications about this task. The chosen candidate will receive the DLL and will provide to us the Java code for calling the DLL methods. In case is needed to write even a wrapper C DLL, the developer will provide this DLL and the code for it together with specific instructions on how to build the DLL from the code (in case we'll do some small modifications to it in the future).