Help!

[dewoitine520]

Hello again,

[I]"Browse to your game folder C:\Program Files\Steam\steamapps\common\il-2 sturmovik cliffs of dover\redist

1) Run the Direct X installer in the DirectX folder.
2) Run the dotNetFx40_Client_x86_x64.exe installer in the DotNetFx40_Client folder.
3) Run the vcredist_x86.exe installer in the folder VCRedist"[/I] = Done but same problem....

So I need to upgrade my RAM to 4GB : I will (around 33 euros in France)

Could you explain what means: "to upgrade my OS to a 64-bit."
What is a "OS 64-bit"? How many bits have my computer? Where do I have to look at to know it?