jritzman,

Step 1. Locate and open CEHtmlEditorProvider.vb

Step 2. Find the RootImageDirectory property and modify it to meet your requirments.
    
    Public Overrides Property RootImageDirectory() As String
            Get
             ...
            End Get
            Set(ByVal Value As String)
                _RootImageDirectory = Value
            End Set
     End Property

Step 3.  Recompile the project.