CCAvenue Payment Gateway Integration

Hi, We have a website along with the Form and for choosing the Advance payment option now we need to link up the ccavenue payment gateway with the form automatically routed to the gateway page with out displaying any form again. And need validation [login to view URL] soon as the customer makes the payment it needs to routed to the display of success page and automatically display the payment details paid to take customer [login to view URL] the customer needs to receive a conformation mail as well as the website admin needs to receive a mail. If the payment is failure also both of us needs to receive a mail. Payment and Milestone will be released only after completion of the [login to view URL] initial Milestone will be deposited.