Thanks for the reassuring reply. I guess it's time to play Nehrim then!

What I did was I installed Nehrim to f:\games\Nehrim I had Oblivion installed at f:\SteamLibrary\SteamApps\common\Oblivion (I have two Steam folders you see, one on C drive and one here) I then copied everything from f:\games\Nehrim to f:\SteamLibrary\SteamApps\common\Oblivion, overwriting everythin...

^
Trying to get past the spambot to ask my actual question.

Regards, Steb