Some first problems using word 2007

[Mr. X.]

Hello.
I have some problem using word 2007 first time.
Old documents don't appear as they used to.
When there is a header-style, I see that it is incorrect, and there is an
annoying number (1bu, 2bu , ... 20bu) at each header.

Second thing :
I change a line and other lines are change too.
I don't know where can I change a header-style, so I assume this may be the
problem.

Thanks

 

[Stefan Blom]

Are you saying that all of your existing documents have a problem with
numbering? I'm assuming you are referring to *headings* and heading numbers
rather than headers (the area above the top margin).

For assistance with the second issue, see
http://word.mvps.org/FAQs/Formatting/WholeDocumentReformatted.htm.