Ok,
I made sure the new card was fitted correctly and all drivers installed correctly.
Disabled the old and enabled the new.
Nowt. Still crashing.
Removed the car and restored everything and even did an update.
Still crashing.
Time for google, Found a thread of old with some handy tips from badmouth.
Followed this and changed the following to a '1'.

And...

We have a game.... well sort of??
The characters are in colour but the game screen is in Black and white. Obviously the graphics chips on the main board are not up to the job.
Glitchy as hell and the sound is bad.
In general just a lacking computer.
I could upgrade the ram etc and fit yet another card but its still only a p4 3.0.
I'm not sure why the new card wouldn't cut it? It states on the box that it supports pixelshader 5.0 so would have thought it to be backwards compatible? or maybe just a dud or dirty port on the mother board.
either way this needs something a little better to run it. Shame as it owes me nowt.
Will watch and see what comes up on ebay.
Just out of interest what 2 player games on v1.0 are stable as a twin?
I know sega rally and Daytona are but what others?
Cheers