Trying to run SDK samples and get following error. Have VS 2005 and Net Frame 2

Warning 1 Namespace or type specified in the Imports 'Autodesk.Revit' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases. C:\Revit API\Revit Code Samples\SDK\Samples\DeleteObject\VB.NET\DeleteObject.vb 26 9 DeleteObject
Any ideas?

Thank you
bob v