Hey guys, thanks for the answers.
The PC version indeed runs without problems (and without key).
I actually own 2 F4AF copies for PC too and no key to be seen anywhere there either...
Only the MAC version needs the key - and yes Chucky I thought about that too but F4AF indeed seems nowhere to be buyable anymore except old boxed versions. Otherwise I would be happy to buy a "new"
version online...
Any ideas appreciated...