Sorry to have mis-judged your preparations Lando. I was a bit of a chippy jerk, in retrospect.
I can confirm, Q, that that is the normal install directory for BoPC K1, in case you want to amend your guide.
Forgive me for asking if I have missed it, but have you tried going to the most basic graphics for the scene?
Also, please look in your <YourName> main folder on your PC, and also in your C:\ drive for
the "compatibility files"... I seem to recall when I had vista for a moment that an edited .ini can end up in strange places.