How to use a Treeview control in a UserForm

I have a simple database of information which is used to prepare a staff cost budget. Each row contains a different task and includes task information such as the amount of hours it takes to complete and the area of work it relates to.

I would like to create a simple Treeview control in a UserForm which shows the area of work (as the 'parent') and the tasks in each area as the children. In addition, I would like to show the information relating to each task when it is selected in the Treeview, ideally in the same UserForm.

I have researched the Net, but unfortunately couldn't find a simple-enough example for me to follow! Something like this, but without the images:

http://puremis.net/excel/code/080.shtml

Does anyone have any simple examples I could use?

Many thanks & kind regards
Richard