Okay what I am trying to do is compare the listbox items for additional items.

Example:

List 1 has the following items on it:

Test

Test2

Test3

Exampe

And List2 has the following items on it:

Test2

Test4

Test5

Test6

If list2 matches list1 then drop that item, however if it does not match then add the item to a list3 box. This means, if list1 has the same items as list2 then remove all the same items, and add the non same ideas from list2 to list3 making the additional items from list2 show up on list3.