At 23:43 98.02.03 -0500, you wrote:
>Thanks in advance for any help...
...
>#2. Could anybody help me "multiplex" 3 or 4 7-segment displays (which are
>to be used at the output of a PIC). Where could I buy the various
>components, does anybody have a circuit diagram which I could take a look at?
>
...

        Hi

 I think you should take a look at aplication note AN529 at the Microchip
Web Site. There you can find a circuit that probably suits your needs.

Welcome and Good Luck
===============================================================
cumprimentos / best regards
      Jorge Ferreira          mailto://jorgegf@mail.telepac.pt
------ Make sure brain is in gear before engaging mouth -------
===============================================================