Making A "Change States" Switch With A Relay. Help Please!

[hellohellosharp]

I have been thinking about a circuit like this for weeks. Lets say you take a relay and an LED light. My goal is simple:

Sending a "pulse" to the relay (just to make it close and then return to original position) will make the LED turn on and stay on. A second pulse to the relay will cause the LED to turn off.

It is basically a latching switch in logical form. Where you have to push once to turn on, then push again to turn off.

Any help would be appreciated. Thanks!

 

[KMoffett]

I've used this circuit before: **broken link removed**
The relay coil voltage is selected to be 1/2 of the supply voltage (though a 5V coil works OK on a 12V supply). R1 and R2 have the same resistance as the relay coil. A down side is that the circuir will always be drawing power, with the relay on or off.

How about a push-on/push-off switch, directly or controlling a relay, from Radio Shack: RadioShack.com

Ken