How to Activate high resolution textures
Where is the FSX.cfg file?
On Win XP, you'll find it here: C:\Documents and Settings\username\Application Data\Microsoft\FSX. In Windows Vista & 7, you will want to make sure hidden files are shown and then look here: C:\Users\username\AppData\Roaming\Microsoft\FSX.
Sometimes you will not be able to save any changes to the .cfg file in Win 7. Do this: Press the windows key, type in notepad, right click notepad, run as administrator, open the .cfg file in notepad, make changes, save.
Note: Before doing any modifications to the FSX.cfg, make sure to create a back up copy of it.
Those of you who benefit from a cutting edge graphics card that has 1 Gig+ RAM onboard will be able to benefit from the following tweak more so than others. There are some recent add-ons that employ ultra high resolution graphics (2048—2048 and 4096—4096). With this setting, you allow the full resolution to be experienced in-game.
TEXTURE_MAX_LOAD=4096 (for 4096—4096 textures) Not needed for ES Products
TEXTURE_MAX_LOAD=2048 (for 2048—2048 textures) recommended for high end systems
TEXTURE_MAX_LOAD=1024 (default value when global texture resolution is set to very high)