Customization "My Trips And Expense->All My Expense Report"

Hello guys,

I am new to this T&E and have a requirement where I need to customize "All My Expense Report" screen in "My Trips and Expenses" like

1. I need to add a column on the screen displaying some customise status of the trip

2.Remove the "Setting" and "Presonilise" link from the screen

3.Add a static mesage at the end of the table

4.Add a 4th tab onto the screen.

If anyone have any idea on any of the above requirement ,please help me out.

Thanks

Pooja