Collections?

I am trying to make a new collection I think. Here is what I'm doing:

Friend tmpCol() as collection

But the problem is that I am trying to make it only accept a certain datatype say: System.Drawing.Icon.

When I do this:

Friend tmpCol() as System.Drawing.Icon

I don't get an add subrouting in intellisense to add a new object. I'm sure none of this makes sense but I just can't figure it out.

VB Code:

This is an example of how to make datatype check before adding it to the collection . There might be other ways but I've seen used commonly . 
 
Friend mycolection As New Collection
 
    Private Sub AddIcons(ByVal o As Object)
        If TypeOf o Is Icon Then
mycolection.Add(....etc)
        End If
    End Sub