[WikiEN-l] current categories and subcategories

[karen marcelo]

hi all

i just joined this list so i'm not sure if this is the correct forum to 
ask this, but how do i get a master list of
all wikipedia categories and sub-categories?    i looked a the database 
download page and took a peek at
pages_articles.xml and see that one can parse out Categories from the 
mediawiki tags embedded in the
text.  but is there some other dump with all the categories (even ones 
that may not have articles) as well as their
subcategories available somewhere?

apologies in advance if this was the wrong list to post this question 
to, but if someone could direct me to the right one
it would be most appreciated.

thanks much!