Hey Timeslip,
I haven't welcomed any new members in here for a long time, so err... welcome. I vaguely remember your handle but can't quite remember if I've spoken to you before? I've unplugged quite a lot from our forums and the Amiga retro scene as a whole, so my memory's getting a little cloudy. lol
With regards to your HDD, how about using WinUAE to access the Amiga files on there? There's a wealth of info on how to do this if you go googling. I do hope you haven't flattened the drive.
I'll have a peep to see if I have any versions of BTF laying around. Also, you could maybe tap the guys up on the old a51 mailist, there are still quite a few bods on there.
Cheers.