Polygraph machine - live graphing of data

Background story:
I am in love with old electronics, i'm only 20 but i already repair and collect them. My latest project is a vintage 1950's polygraph machine, i have it repaired and working except that as poor college student and i can't afford $600+ for antique replica pens and ink. So i have decided to retrofit it by replacing the six electromagnet driven pens wit an arduino Diecimila...i will be installing a dedicated windows laptop into the unit as well and would like to be able to display the live voltage data...

Problem:
So really i need some code that will graph the voltages (0~5Volts) in real time!

Thanks! i appreciate any help i can get :slight_smile:
-Alex

You could start using Arduino + Processing. Here you can find a good example you could modify.