Jon Bennett has released the latest version of the GImageX tool via the Autoit website.
GImageX is a graphical user interface for the Microsoft ImageX command line tool supplied with the Windows Automated Installation Kit (Windows AIK).
The latest version is v2.0.12 (26th March, 2008) and can be downloaded here. This new version of GImageX has a separate COM component so that it is possible to do WIM imaging directly from VBScript and/or HTAs.
Note: This tool is not supported by Microsoft. Please see the license that accompanies the download.