Under previous builds of .NET 2.0 there was an interface System.ComponentModel.IPropertyChange

There is even this page describing the interface:

http://msdn.microsoft.com/library/t1hdf260(en-us,vs.80).aspx

But when I try to compile applications that built under previous builds, I get this build error:

Error 1 The type or namespace name 'IPropertyChange' does not exist in the namespace 'System.ComponentModel' (are you missing an assembly reference?) 

Any ideas?

** Thanks Cory Smith!!  The new interface is:  System.ComponentModel.INotifyPropertyChanged