I need urgent help with running a program. Anybody, help?!

I bought a book "Advanced Grammar in Use" with CD in it. I installed it on the computer, but every time I try to run the program, I've got a message about an error
Executable 'I:/AGU.exe' had the following unrecoverable error: Couldn't find library MSVCR80.dll (required by C:/PROGRA~1/COMMON~1/MICRO~1/OFFICE12/MSOXMLMF.DLL)
Please ensure that it is installed.

You should run a virus checker to be sure that Data Link Library wasn't removed or changed. To replace the file, below is EHow on installing the MSVCR80.dll :

http://www.ehow.com/how_5166908_install-msvcrdll.html