Dear Radarman and Peter in Australia
Thankyou for the advice.I have been unable to respond until now because the problem(after re-installing, reformatting etc. several times over-I'm retired so had the time- it transpired that my expensive 15 month old Ti4200 had failed, only on fs and games.As I also do a lot of music scanning/recognition and LP to CD conversion I decided to upgrade and now have a 64b Athlon 2800+, KV8 mobo and FX5700/128 graphics card.The results are very satisfactory - with 4x antialiasing and all sliders maxed(I always use this as a reference because it's easy to set and remember)together with 38m mesh for many parts of the world and add-on detailed airports I get a minimum frame rate anywhere of 11 ie. just starting to be jerky, and an average of >20.
Anybody want a slightly used GeForce4 Ti4200/128???!!!!