Hi Alireza ,
Welcome to this Microsoft Project newsgroup
The only way I can find is to create a new template. Try Format/Box
Styles.../More Templates.../Copy.../give it a name. If you click on the
cell Start, you can now choose the Date Format which has week/day numbers at
the end of the pick list. Repeat for Finish and close down. Now select all
the boxes, Format/Box/and from the Data templates pick list, select your
template/OK.
FAQs, companion products and other useful Project information can be seen at
this web address:
http://project.mvps.org/faqs.htm
Hope this helps - please let us know how you get on
Mike Glen
MS Project MVP