wireless interface with xbee

[automan]

hi i would like to ask you instead of using a 18lf4520 pic like in the project can i use a 12f635 chip to connect act as a transmitter and receiver and can i use the same software which is used in the project for the 12f635 pic

also i have a another question we normally code and design software to blink an led using a pic microcontroller ,what are the parts needed to blink a larger torch light instead of an led ,and how do you design the circuit