sending serial data to processing and recording in a .csv file

In the system I am working on I have two voltage measurements being taken one after the other. The voltage readings are the voltages on either side of a resistor and are going to be used to determine current. I would like to have these readings in two separate columns in Excel when the .csv is opened. This is my first time work with Processing and do not know the code to get this system to work.

Can you post the code you have so far?

printing comma separated lines from the Arduino is not difficult,

If you want it into excel, you can also google for gobetwino, works very well