My advice is to tread carefully here. I was lucky enough to get in contact with the head of Sierra games as I wanted to port the HW2 stuff to BC. He stated that it wasn't strictly legal due to the use of different 3d engines licenced by different publishers. He did allow me in my case but on special dispensation to do so.
Granted, HW & HW2 is getting on a bit now so I cant see much of a comeback, but watch yourself!