Eigenvalues for particle in finite square well

[poder17]

I am a second year physics student and have been set a homework assignment to solve a one dimensional time independant schrodinger equation in a finite square well using microsoft excel.
I understand the physics behind the situation but am not exactly sure how to use microsoft excel to solve the equation.
I need to present graphs of the normalised wavefunctions and the corresponding probability distributions.
I need to chose my own m (mass), L (length of well) and Vo so that there are four energy eigenvalues and then calculate and show these values.
Anyone who could help shed some light on this, your help would be greatly appreciaeted.

Thanks,
Joel

[CaptainQuaser]

put this in physics homework questions instead, and you will need to show an attempt at a solution.