To fix those annoying popups, first try this:
In the registry:
HKEY_LOCAL_MACHINE\Software\Microsoft\Office\11.0\Delivery
see one folder, with a long code name; enter it.
There is an entry named CDCache; change the value to 0 (zero).
If that doesn’t work, try downloading these three files:
http://www.knights-templar.com/FRONTPAGE2003/ZS561401.CAB
http://www.knights-templar.com/FRONTPAGE2003/PA561401.CAB
http://www.knights-templar.com/FRONTPAGE2003/YT561401.CAB
and save them in C:\MSOCache\All Users\90000409-6000-11D3-8CFE-0150048383C9.