Ive never used the 2 pin resonators before but some can be found here http://www.rapidonline.com/Electroni...5/kw/resonator. Why do some have 2 and some have 3 pins?

I dont really have any PIC chips that arnt in use. Just a few 16F84As and some 40 pin ones (cant remember the number). I should get a few in i suppose.

PICMultiCalc. Sounds familiar. I remember downloading something from your site that deals with baud rates (proably the same thing).

I think it depends what you mean by "Critical". I took it to mean it has to run at a certain speed or it wont work as intended. It will just be fading bulbs though. Its not like anyones life depends on it.

I had no idea that a PIC16F84A was so obsolete. Everywhere still sells them round here. Usually as soon as something new comes out you can never find the old ones