Christian Graus wrote: Process.Start("c:\") should, I believe, open explorer at the c drive. Thanks very much Christian. You are spot on. I doubt if I would have found this in a month of Sundays. Cheers Tim

Thank you for your response. Unfortunately you misunderstood my question. Your response, however, did get me thinking what are the available data types in My.Settings and I found that there is a StringCollection type and this is exactly what I am after:-D. Thanks for the push in the right direction. Cheers Tim

NOW I get it Thanks David

Probably this: Protected Sub onMenuItemClick(ByVal sender As Object, ByVal e As EventArgs) Dim item As MenuItem = CType(sender,MenuItem) If (Not (MRUItemClicked) Is Nothing) Then Dim fileName As String = CType(_itemMap(item),String) MRUItemClicked(Me, New MRUItemClickedEventArgs(fileName)) End If End Sub Best Regards, Apurva Kaushal

I've been working on a similar problem and I handled it with Delegates. I made an example using your class descriptions to test my knowledge of delegates. I'm no expert here but this will do what I think you are looking for. 'The delegate that handles the communications between classes. Public Delegate Sub AreaChangedHandler(ByVal sender As PartObject) Public Class PartsCollection 'simplified collection 'not intended to demonstrate a true collection class Dim m_collection As New ArrayList Dim m_Area As Double Shared Event AreaChanged As AreaChangedHandler Public Event PartAdded(ByVal part As PartObject) ReadOnly Property Area() As Double Get Dim obj As PartObject Dim totalArea As Single For Each obj In m_collection totalArea += obj.Area Next Return totalArea End Get End Property Friend Sub Add(ByVal part As PartObject) m\_collection.Add(part) RaiseEvent PartAdded(part) End Sub Shared Sub OnAreaChanged(ByVal sender As PartObject) RaiseEvent AreaChanged(sender) End Sub End Class Public Class PartObject Dim m_Width As Single Dim m_Height As Single 'Shared delegate that invokes OnAreaChanged method in PartsCollection 'without having to create an instance of PartsCollection Private Shared delegateAreaChanged As New AreaChangedHandler(AddressOf PartsCollection.OnAreaChanged) Property Height() As Single Get Return m\_Height End Get Set(ByVal Value As Single) m\_Height = Value Call AreaChanged() End Set End Property Property Width() As Single Get Return m\_Width End Get Set(ByVal Value As Single) m\_Width = Value Call AreaChanged() End Set End Property ReadOnly Property Area() As Single Get Return m\_Height \* m\_Width End Get End Property Protected Overridable Sub AreaChanged() delegateAreaChanged.Invoke(Me) End Sub End Class