I have lots of add-on scenery, textures and aircraft.In the past, I fiddled with "hangars" where I "parked" the unused aircraft, and I switched scenery layers on and off as the situation I was flying in demanded.After having some problems with doing this (e.g. dependencies of sounds/gauges etc. between aircraft and missing scenery/navaids) I abandoned "hangaring" and playing with the scenery. I now have everything on, and all aircraft available.I don't have problems with this, but I'm unsure whether this would eat up too much of my computer memory and/or slow down FS?Andreas

Hi Andreas,I think the best way to see how much memory FS2004 is using up is by looking at your task manager PERFORMANCE tab and under COMMIT CHARGE/PEAK section. Press CTRL-ALT-DEL (assuming you use WinXP or 2000), select task list (or task manager) - select the performance tab. Then look at the COMMIT CHARGE and see what the PEAK tells you (in KB so 531,000 KB would be approx 531MB of RAM used as a MAXIMUM in the past). You can then safely assume this is due to FS as FS2004 takes up anywhere from 300-400 MB or more. The other way is if you see a noticeable slowdown of aircraft performance especially when taxiing on the ground. You can see the actualy FPS in FS2004 while flying by pressing SHIFT-Z. I actually can get framerates of as low as 5FPS when in custom-made photo-realistic airports (e.g. Frankfurt-Main by Simflyers).Don't worry about how much memory you use up as FS2004 should always be run by itself and with as much of the stuff in your system tray disabled as possible (e.g. spyware, etc...). I have 1GB of memory and memory usage is around 700-800 MB so I'm good.John

For a long time I tolerated stutters in FS9 (specially when clouds were present). Then I stopped the anti-virus and all other unecessary programs running in the background in the System Tray.Wow.No stutters, super-smooth FS9 - even with the sliders all maxed.Now this is old news but I was ignorant of it until now!Give it a try in case you havent tried it yet.:)