Thank you for the response healdem.
This is (i believe) what i've been doing but to no avail. The code i have for my 'Delete' button is:
Private Sub cmdDelete_Click()
colPersons = My Collection
lbCollection = My listbox which displays my collection data
When clicking 'Delete' i get a Compile Error: Argument not optional
I would hugely appreciate further help getting over this frustrating hurdle!!!