I don't know if this will help, but here's the way I did it.
I installed IDEFix97 on WB3.1, then made an emergency disk using OS3.9.
I then installed using the emergency disk on to a clean system i.e. formated hard drives, then I get the shareware message come up for IDEFix97.
What I do then is just reinstall IDEFix97 and everything works prefect.
Not sure if this is the right way to do it, but works for me...
I have DVD drive and a CDRW,as well as an IDE HD, runnning fine like this.
:-)
