Internet Explorer 7 Beta 2 Uninstaller Kit released by
Microsoft.

There has been a regularly recurring problem with users being unable to remove
IE7 Beta 2 because their uninstall directory is missing.  These people were
forced to either keep IE7 Beta 2 or source uninstall directories from elsewhere.
 

I have always said that it is dangerous to source system files from third party
sources because the danger of assembly hijacking, viruses etc, not to mention
the question of whether or not distributing uninstall directories is legal under
the EULA.

Microsoft  has been well aware of the problems, and have addressed the issue by
providing a new Uninstaller Kit which  "Forces uninstall of Internet
Explorer 7 Beta 2 using default files and settings.   This toolkit will
uninstall Internet Explorer 7 Beta 2 using default files and settings from
Microsoft. It is only intended for use if normal uninstallation methods failed.
See KB 923721 for more information."

http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=671b
af16-52a3-410c-85a8-931ea6de5ff8

Glad to see Microsoft is doing something about it.  Perhaps it would have been
nicer if the user could uninstall in the first place, but still, I'm glad to
know it's out there.