Microsoft has released an update that eliminates the security vulnerability. 
We strongly recommend you visit http://support.microsoft.com/support/kb/articles/Q240/3/08.ASP and install this update. 

If you do not use any HTML applications (HTA-files) at your work, there is another way to prevent infection by viruses of 
this type (the worms and viruses that use "Scriptlet.Typelib" security vulnerability). 
It requires to remove the file association for .HTA extension. To do this you have to 
follow several steps: 

1. Double click the MyComputer icon on desktop. 
2. In the appearing window choose menu the "View" -> "Options...". 
3. On "File Types" tab in "Registered file types" listbox select      "HTML Applicaton" item. 
4. Click "Remove" button and confirm action. 

Close options dialog box