Hehe no prob Snake,I gave it a try again.
I changed a few settings and now running FF5.3 in 1920x1080 and AA settings off and done 2 missions in my campaign without a ctd.
Dunno if it's stable but could at last do two missions.
I've ordered Falcon 4.0 Allied Force today and should have it in 2/3 days, all I can hope that one is running without problems
cheers
Mud