Ken shared this with us in microsoft.public.word.newusers:

I have just upgraded from Word 2000 to Word 2003.

In 2000 when I installed my Acrobat pdf writer a tool bar appeared.
However on 2003 there is no toolbar and wondered whether I can get
one on there.

Ken

Have you checked if your versio of pdf writer software is compatible
with MS Word 2003?
Have you tried (uninstalling and) re-installing your pdf writer
software?
If that does not help, consult the support pages on the website of your
pdf writer software.