Holy Crap! fsx with maximum settings + HD

I loaded the Tokyo scenery in flight simulator x with all the settings and stuff at maximum + custom + HD, custom b/c the maximum default is not that big but i got in custom and i set them to maximum (every single thing) and when i loaded the scenery with Tokyo it said your computer has run out of memory! WOW it was only b/c the Tokyo scenery is the biggest in fsx so is taking memory to load i know that because the other scenarists run smoothly btw my computer has 3 giga ddr3ram so the fsx takes a lot of memory, now I'm trying to add virtual memory up to 6 giga and see if i can run it lol. It's a lot so wait for results about how it runs with 6 giga. Btw with all the settings at maximum + custom + HD is awesome everything looks so cool and it runs smooth on quad core btw here is my computer status when I run fsx with all the settings at maximum:

Acer Aspire
Ram: 3 giga DDR3RAM (Have to update it)
Video: Ati Radeon dual HD 256 ddr3ram overclocked
Processors: Intel Quad Core
OS: Windows Vista Ultimate X64 bit Service Pack 1

All my system is 64 bit based

So i guess you need more then 3 giga memory to can run Tokyo scenery in fsx.

Woah thats crazy

I know