Activation on GFWL question

I’m planning on buying AE for the pc, My problem is that i have a desktop and a laptop i use and i want to play online on both. Is the activation key going to be only useable for one pc or can i use multiple pc’s with it.

You can use multiple PC’s, but only if when you install you use the same GFWL account to activate the key.
Obviously this means you will not be able to play against someone using your laptop while you play on your desktop however.

Thanks a lot.