We currently use Project Server 2003 and are running some calculations
based on customized fields. We are trying to use some canned reports on
project but are seeing that earned value canned reports on project are
using canned fields and we cannot point the values to a custom fields.

1- Am I missing a way in which I can point the values calculated on a
canned report to a custom field?
2- What is the calculation for earned value? If I get the calculation,
I can figure out the CPI and SPI which is the goal

Thanks