I followed Ryans tweak tips, it made little difference to my system, until i discovered that my NVIDIA folder had two old driver folders inside so i deleted them and restarted FSX ,it made a huge difference.my system specs are below as you can see it's by no means a top end system but FSX is now very playable thanks Ryan.Phill Irwin------------------System Information------------------Time of this report: 10/30/2006, 08:33:12Operating System: Windows XP Home Edition (5.1, Build 2600) Service Pack 2 Language: English (Regional Setting: English)System Manufacturer: GBT___System Model: AWRDACPIBIOS: Award Modular BIOS v6.00PGProcessor: Intel® Pentium® 4 CPU 3.20GHz (2 CPUs)Memory: 1024MB RAMDirectX Version: DirectX 9.0c (4.09.0000.0904)Card name: NVIDIA GeForce 6600 GT driver version 81.98

Phill,What do you mean? You can't have more than one driver installed at the same time... Are you talking about just the installers? If so, there's no way that could have affected anything, those are just files on your drive like anything else - they can't affect your performance.