Rf transmitter and receiver

HI everybody.
this is mohammed. Am planning to do a project which contains rf modules(transmitters, receiver)FM/FSK,micro controller, encoder, decoder and antenna. this is a kind of safety device. am planning to use LCD display,Buzzer, LED.
can anybody suggest
1)how should i go ahead,
2) provide me some websites which can help me in doing this project?

try some googling on 433MHz transmitter and receiver modules
there's masses of info on the www :)

Dave

Dou you plan to make RF modules alone or to buy it ?