A2Billing User Portal MOD

When you log into the A2Billing Customer Portal, I want the card Number/Balance Remaining section of the first page replaced with the view invoices section. ( customer/[login to view URL] ). keeping the rest of the initial page there ie..(Edit Personal Information). Also When you click on an unpaid Invoice from the list I want a pay now button at the bottom that when you click it takes the total amount of the invoice and sends it to the payment gateway, then reply's marking the invoice paid.