The MITOrthoTools for ArcView allows ArcView users to incorporate online orthophotos from WMT servers into their views.
The tool consists of an Arcview extension that adds two buttons to an Arcview View. The first button allows one to choose a server, and the second button refreshes or downloads the image into the current Arcview View.
You can configure the extension through a menu located in the Arcview Project or by editing an initialization file. Configuration allows the extension to find scripts it relies on to access the WMT servers.
Currently, there are both Java and Perl implementations of the scripts and you can use whichever one is installed on your system.
See the installation instructions for information on system requirements or go directly to the download page.