We are looking for a sliding image tool like the one on the following home pages:
1) http://xceed.com/index.aspx (Silverlight based)
2) http://usa.autodesk.com/ (Flash based)
Where can we purchase something similar?
While I'm not aware of a pre-packaged control that is "exactly" like that, you can make one fairly easily, and much more creatively, using Telerik's Transition control. Link to Product Page