I'll try all of the above this evening. I don't think that I've been given a used processor, the store seems "legit", but something isn't right wiht the frames I'm getting. I tried Eric Ernst's 767panel version7.0 today at Heathrow (rwy 09R) with default scenery. The fram rates were 15-24 on take off roll! In the air around 35-40.
I installed DirectX7a yesterday with perhaps a slight improvement.
I'll keep you posted.