Calculator Program

Hi, I need a special calculatior program which will be just for addition and subtraction for now. It will look like an excel spreadsheet but very very basic. Here are the details: 1) 4 column grid, large fonts and large grid. 2) column 1 will be a picture of a plus or minus sign. When you click it, it toglles to the other one. 3) Column 2 is a 50 character description 4) column 3 is the dollar amount. 5) Column 4 is an 'ignore' button to make believe the number is not there 6) There needs to be a constant total in the footer of the grid in big. 7) Need a print button to print it out like a spreadsheet. Nothing fancy for now. Fancy will be a follow up project. 8) Need a save button which saves it in some kind of text format. 9) Need a load button. 10) Need big scroll buttons to scroll up and down the list. Thanks, Ed