Some give me a hand please?

Hey /prog/, I need some help with some coursework in VB 2008. Basically I need to write a program which enables the user to enter a recipe name, it's ingredients (Also, their weight and units) and the amount of people it serves. It then needs to store this in a text file. The program then allows the user to read the recipe from the file in a list box. They also need to be able to enter a new amount of people to serve, where the program outputs the recipe and it's details manipulated for the new amount of servings.

Any help would would be appreciated, I have no fucking idea what to do.