Wow, ive come a long way since then and I had even forgot that I ever did this!

As for the circuit, I think its best if you try and figure it out on your own. If you are not comfotable about designing a circuit for this then you are obviously not ready to try some thing 'this' complicated.

Why not try a flashing light excersise first? And then maybe a A/D conversion from a potentiometer. And then get an LCD going. They are usually the best ways to go. From there It is possible to simply replace the Potentiometer for the LM35Z and vuala.

Phil