I can't insert page numbers

A

Ak.

when I go into the column "insert" in Word 2007, and I click on the button
(Page Numbers), instead of having a rolling list of types of page numbers I
get an error message that there's a file in the name of (building.dll) is
missing, but not the whole location of it.. and I found the file in the
folder of installation, but I don't know where it has to be in other places...
now; the more tricky thing is that I un-installed the whole office2007, and
had another copy of it which is working well on my friend's PC, and installed
it, but the problem still the same...
and I have installed all updates of windows and office but still not
working... and I can't have my laptop formatted now, I have to wait for 2
months min.

could anyone please help me???

thanks ahead
 
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