[racket] Calling ActiveX DLL

I use a proprietary program which recently has had a user interface 
added to it, consisting of an ActiveX DLL.

Details are at http://www.sky-software.com/developer/ - one can send 
commands to the program and
retrieve data from it. It can be called from Visual Basic for 
Applications or, for those who still have it, VB6.

I believe this is what is called a COM control, or other terminology. I 
think it would be good if it could
be called from a modern programming language but I have not had any 
success. I think
MysterX used to be used for this kind of thing, but this is now 
deprecated. Can it be done from
current versions of Racket? Where might I find instructions that a 
non-Windows expert might be
able to understand?

Regards

John Sampson