Arduino + Xbee question

Thanks! My last question about the xbee then is this from what I have found the series 1 is for point-to-point ie(2 xbees communicating) and the series 2 is for multiple xbees communicating. Would it be possible to connect 2 xbees to one mega. I want to use an xbee for a wireless controller similar to the arbotix wireless controller () but I am also planning on a xbee wireless serial connection to recieve inputs from a computer hooked too a laptop. Therefore I onlt need 2 xbees commuicating to each other.

Controller xbee >>>>> Arduino xbee
Laptop xbee >>>>>>arduino xbee #2

If this isn't possible would I then need to get the series 2 so that all can talk to each other and the laptop and controller xbees will just ignore each other based on tags but on the signals? Thanks for all the help too I really appreciate it. I have been planning this project for a long time now and since the budget isnt huge I am trying to avoid unnessecary spending by getting components I am sure will be able to work together.