Connecting just 2 accelerometers to an arduino uno using Xbees? (arduino noob)

So I need to wirelessly connect two separate accelerometers to one arduino using xbees, but I'm not exactly sure how I'm going to connect the xbees and shields to the accelerometers and then to the Uno.

Will I need separate Arduinos for each accelerometer, or can I connect the accelerometers straight to the shield and xbees, then directly to the Arduino? If so, then how would I do this?

What kind of shield and accelerometer are you using? Can you show us a picture or post a link?