Scenery question

[orangevanman]

Hi guys,
I see a lot of downloads for the scenery add ons on the simviation website under fsx downloads.
There seems to be pages of them, my question is:

Do i download them all seperately and add them?

or

Is there one big file to downlaod them all?

or

Is it worth downloading them.

or

Do i need to download the earliest before i download the newest?


Sorry guys i only got fsx yesterday and i want to get the best pics/graphics/quality i can,

As i am pretty much new to all this adding new planes/choppers/scenery is it possible for someone to give me a real
easy/noobish talk through on how to put all this stuff onto my pc as i really have no clue
My specs are

500 gig harddrive,
Windows xp
Nvidea 280 1 gig graphics card,
Intel coreT 2 Duo E6600 Duel Core Processor (2.4GHz 4 MB)
Asus P5N-E SLI nForce 650i(C55) mainboard Core 2 Duo/Quad-core
4096MN DDR2 533MHz Memory (4x 1024MB)


thanks for you help guys