I just want to let you know that I'm working at the FCI functions of CABINET.DLL. I had a look at this a few years ago, but gave up soon. Two weeks ago I made a new attempt and next weekend I should be able I post a patch which implements all FCI functions and will work with spanning cabinets. Real file compression will not be implemented at that point of time as I still have to write missing parts and complete error handling first. This work took me longer than expected so let's see if I can adhere to my schedule.
Regards, Gerold