After some time and effort I have now finished upgrading my computer with a Amd Athlon II X3 445 3.1 processor and 4 Gigs of Corsair Memory. All my plane now fly smoothly and no more jerky turkey going on. I also upgraded my Video Drivers. That is a GeForce 220 1 Gig video ram. I do hope this works out due to my not have a lot of money for a super rig. If anyone is using this processor, is it good enough for Flight Sim X or do I have another Loser on my hands. I did have a AMD Sempron Processor running at 2.2 gigs and 2 gigs of ram. It was slow!!!