We want to Customize the Project Status inquiry to get the Actual Invoice amount - Report Purpose

We want to customize the Project Status inquiry in Form level.  That is we for reporting purpose we want to compare the Cost Vs Actual Invoice Amount instead of Actual Revenue.  As of now we can find the Invoice details when we click on Invoices Tab but we want Invoice amount to reflect in one of the column along with ITD - Rev Bgt, ITD - Act Cost, ITD - Act Rev, ITD - Cst Bgt, PTD - Cost.  We want to get the Actual invoice columns as ITD, PTD and YTD.