Interfacing Arduino with PC (2-way communication)

hello.

i just want some advice/help :slight_smile:

my project is about sending data from pc-xbee(Tx)-xbee(Rx)-fan. in simple words, i just want to switch on/off the fan.. however, i find it very hard to start but i think http://tutorial.cytron.com.my/2011/08/13/project-14-wireless-temperature-logging/ was a very good tutorial for my project right ??

i have ..

2 Arduino Duemilanove(Compatible)-Main Board
2 Arduino-XBee Shield (without module)
2 XBee 1mW Wire Antenna - Series 2

can i use this tutorial Antipasto Hardware Blog: XBee Shield to XBee Shield Communication to make my xbee communicate to each other first?? if not, can someone help to link other tutorial (similar to my project)?? please teach me... thanx~