Modulating crystal oscillators

when i have a simple oscillator like this:
http://www.repairfaq.org/ELE/F_ASCII...ASCIISCHEM_010

where and how can i add an electret micro to make the circuit operate like a transmitter ?
thanks.

Crystal oscillators are difficulty to be modulated directly by summing another signal..
A better stuff can be found here:
http://www.geocities.com/tomzi.geo/

Also, u can get further good stuff if u searched for "FM+Transimitter" on Google or whatever..

Regards,
Ahmad,

Thanks ahmad_abdulghany :)