Using Uno as ISP for Arduino bootloader for AVR chips

This article is fantastic: http://arduino.cc/en/Tutorial/ArduinoToBreadboard

However it states in bold that the techniques mentioned do not work for the Uno. Where can I find a procedure much like this where the UNO can be used as the ISP? Why won't the procedure in the article work if an UNO is used?

Read this... http://arduino.cc/en/Tutorial/ArduinoISP

David--

Thank you so much for referencing this Tutorial.

I successfully followed the procedure to have an UNO R3 burn Optiboot onto an Adafruit Boarduino which came with the bootloader for a Duemilanova with Atmega 328. I did this because I wanted to run my UNO programs without having to remember to select a different board when uploading

The only confusion I had was in Step 7 where the actual order of selection was Tools>Programmer>Arduino as ISP, and after this was selected, I ran the Tools> Burn Bootloader command.