I am using Word 2003

I created a form with 2-Headers (Pg1 and Pg2) - Headers like in "Header and
Footer".  The headers are made up of 2 tables.  I created them in Arial font.
Now I am copying old procedures on to the new pages with the headers.  
Sometimes it changes my headers to "times roman" font.  So I then change it
back to arial.  When everything is completed, I save the new form and print
it out.  But if I have to bring the saved form up again, the headers (not the
guts of the procedure) are back in "times roman" font.  I have tried to
change the "header" style to arial, my normal  style is arial but this
automatic change continues to occurr.  

Can anyone suggest a solution?  I just hate it when Word tries to tell me
what I want instead of just letting me make the decision.  This is very
frustrating since I have to make this change to over 100 files.

I would appreciate any help you can give me - Aurora