ps2 controlled project

The range i was looking is about a 1.5 miles. I was thinking of using the 900Mhz Xbee's, best bang for the buck, that i could find. I was about to buy a book on programming but i actually just got laid off work today, without any kind of notice. So i'm basically in panic mode now, I'm a auto technician. But I'm not giving up yet!!!