listview advanced edit(VB 2010)

hey coders.

i need help to figure out how to seperate the item and the subitem in a listview(edit on double click)

i have a listview in my program that loads some infos(it both have an item and a subitem)

i want to make it double click editable. but i dont now how to make it edit the subitem when subitem is clicked and how to make it edit the main item when thats double clicked(seperate the subitem and main item)

can i get some help?