What's the ietag.dll file?

What's the ietag.dll file do anyway?

There's some discussions that it has something to do with the IE and Office 2003.

I just visited my blog victorcab.blogspot.com and IE 7 asks me to run the file.

Here's some info from the Microsoft website:

http://support.microsoft.com/kb/873352
More information about the Ietag.dll file issue
Both Office XP and Office 2003 use the Ietag.dll file. If you install Office XP on a computer where Office 2003 has never been installed, you will receive an Ietag.dll file that has a file version number that is similar to 10.x.xxxx.x. If you install Office 2003 on a computer, you will receive an Ietag.dll file that has a version number that is similar to 11.x.xxxx.x, whether Office XP is on that computer or not. If you remove Office 2003 from your computer, the Ietag.dll file will not be deleted or downgraded to an earlier version. When you install the Security Update for Office XP (KB873352) on a computer that has Office 2003 installed, or that had Office 2003 installed previously, the security update will not overwrite the Ietag.dll file because the Ietag.dll file will be an Office 2003 version.