From McAfee (similar problem):
This is a generic detection of malware which tries to exploit a Microsoft Internet Explorer vulnerability, which was discovered February 25, 2002. This exploit could result in an executable file being run without the user's permission or knowledge, when visiting a web page or viewing HTML email message. This affects Internet Explorer 4.x and higher, Microsoft Outlook, and Microsoft Outlook Express.
This vulnerability has incorrectly been called the "Popup Object Vulnerabilty", the "Data Source Object Vulnerability", the "XMLid Exploit", or the "DynHTML Exploit" but these are just the methods to insert the exploit into the HTML. The vulnerability occurs because Internet Explorer allows HTML in the "Internet Zone" to launch programs in the "My Computer Zone".
In this case it looks as if the spyware company is trying to find a way against you protecting yourself from it. This is the argument against the morality of spyware - it's not illegal if they are not using the holes in the OS to cause any actual damage, but it's very intrusive. Unfortunately we agree to the advertising when we agree to the terms and conditions of the site.
