VC++ excercise

I have to write a excerice by VC++ to solve this problem :
When build houses, people want to know the quality of soil where the
houses will be there. A method is drill some holes into the soil, then
research the data of the holes.

My program should have a dialog that cointain a list box, an edit box,
some buttons ( OK, Cancel, Add, Edit). Engineers can input the name of
a hole by edit box, press Add the the string of the hole is displayed in
the list box. They can choose one hole from the list box, press Edit, then
the second dialog is diaplayed, after that they can put new data or
edit old data of the hole which they chose. At last they press button
Save in the second dialog, all data is saved in a file.

I'm a biginner in VC++ so I wonder how to make clear the ralations
between the dialog controls and buttons. I also wonder how to
save the data by VC++ in this case.

Could you help me some suggesions ? (program is better, I need
it very much to learn)

Thanks