What i want to do is compare two lists, and then view which items have been added/removed.

So, for example:

List1:

bob
jack
tim
dave
john

Compared with list2:

bob
alan
jack
tim
george
john

would show that alan and george were added and that dave was removed.

How would i go about this? 

I believe by now you would already have solved your problem. If no, here is what you can do:

1. Overload subtraction operator (or write a function Difference) that takes two lists List1 and List 2 as parameters and returns a list of
all members of List1 that are not in List2.

2. With this List1 - List2 (or Difference(List1, List2)) will give you all items removed and List2 - List1 (or Difference(List2, List1) will
give all items added to go from List1 to List2.
 

Hope I understood your problem correctly and that this solution helps.

 
Asad