need expert in visual logic

I need to develop a small program for a class project but I cannot understand this program. The basic description of the program is this. It will be used to add dollar amounts for medical bills. 1. Once you come in to the program. It should ask you for the date of service. Then you enter the date. 2. Then you should enter the total amount of the first charge. If there is more then once charge for that date of service, it should give you an option to enter that charge as well. Then until there are no more charges for that day. it will ask you for the next date of service and basically repeat step #2. Then you should be able to tell it there are no more dates of service and it should display a total for each day and a total for all the dates of service together as a grand total.