problem regarding wireless transmission...?? can any1 plz help me out...??

hi.... i m working on my final year project... and i have a hurdle regarding wireless transmission. on the transmission side i have avr atmega16 microcontroller which is to be interfacted with an rf transmitter and at the receiver side i have atmel 89c51 microcontroller which to be interfaced with an rf receiver... i need the rf trans. and recei. having range 10m t0 200m. can any1 plz tell me the rf tx and rx module compatible with both the microcontollers. its urgent...

Hold on my Crystal Ball is on the fritz, what TX, RX transmitters are you talking about?

i m talking about the rf ( radio frequency) transmitter and receiver which i can interface with 89c51 and atmega16 microcontrollers ranging b/w 10 t0 100 meters.

A pair of XBee Pro modules can do that distance.