Which RAM shall i get for my motherboard?

Hello friends,

I just got a new mobo MSI G41M-P26 and planning to buy Intel Core 2 Duo E8400. Now the only question is that what and which RAM shall i get for these two so that i can utilize their efficiency to the maximum extent.

I googled for that & i got this topic as 'Dual Channel RAM". I don't have the faintest idea what is it and how it can be configured. I want to get 8 GB DDR3 RAM. I also searched CORSAIR website for the same but didn't got any clue about this 'Dual Channel' memory.

So please, if any one of you can help me out what this term means and can i use it on my CPU and mobo assembly and if yes then how shall i achieve it.

It would be of great help for me if my question is answered here.
Thanks.