Arduino+xbee in tinyos

a wireless mote is best designed using ATMEL AVR microcontroller
I intend to design an wireless mote using arduino decimilla and duelminueve .
I want to design a weather datalogging unit
a rainfall measure at one unit humidity measure at another.
finally we can provide the entire data at the sink node

For this do i need an xbee shield.a radio Chipcon CC1000
? – UHF transceiver (300MHz–1GHz)
? – FSK modulation

I have found 4 design block units for the wireless testbed

i)microcontroller
ii)wireless sensor to interact
iii)programming module
iv)operating system primarily tinyos
i need to know jst like we configure a micaz mote with a tinyos for sending data
can the samething be done via an arduino and xbee
what do i need for this purpose
how to configure it
how many minimum xbee shields do we need for arduinos