Hiya you haven't give us all information needed.
There are few possibilities:
1. There is a feature in all Office programs that it hide commands in
the menu that are used rarely. In that case you should see double
arrow at the bottom of the menu like this >> but pointing down, click
on that and you should see all the missing commands.
2. while all office application closed backup your normal.dot file
(search your PC for taht file) for example on USB drive and trash the
original normal.dot, keep the backup, restart word and see if that
helps.
3. If that is not your case, try to run help>detect and repair
function
but before make sure you backup these files (search your PC form them
and set the attributes for hidden) normal.dot, personal.xls,
xlusrgal.xls, *.pst file
If nothing helps you are welcome to post back