>NameObjectCollectionBase or dictionary - the class is does not matter

Ok

>I've used the volatile keyword http://msdn.microsoft.com/en-us/library/x13ttww7.aspx
>See also here http://www.yoda.arachsys.com/csharp/threads/volatility.shtml

I do not see a Volatile support in VB.NET. I have the following choices: Class, Delegate, Enum, Interface, Module, MustInherit, NoInheritable, Partial and Structure.

I also do not understand this application in what I am trying to resolve. But, this may not be needed.