VB.net Arrayd

I have a program I have to build and I suck at writing codes. I have know idea what I am doing, could someone please help.

Here is the problem.

Write an application with a list box and a button. The button click event should generate ten random values and store those values in an array. Call the array's Sort method to sort the values, and then display the sorted values in the list box. The program should then calculate the average of the array values and display the average in the list box. Finally, the program should display all the array values that are greater than the average.

So far this is all I have:

Dim num As String
Dim i As Integer

Randomize()
i = Int(Rnd() * 10)

It gives me random numbers but more than 10, and I don't know where to go from there. I am using C++ in VB.Net.

Please help.