understanding apache and ps

[Sean Kirkby]

Howdy,
 
Hope this question isn't TOO newbish.
 
I'm just trying to understand how apache2 is launching threads.  I need to apache2 permissions to some files, but I am not sure who to grant the permissions to.  The `ps` output shows this:
 
root     17301  0.0  0.8 28888 4528 ?        Ss   15:47   0:00 /usr/sbin/httpd2-worker -f /etc/apache2/httpd.conf -DSSL
wwwrun   17302  0.0  0.7  7508 3636 ?        S    15:47   0:00  \_ /usr/sbin/httpd2-worker -f /etc/apache2/httpd.conf -DSSL
wwwrun   17323  0.0  1.5 64036 7712 ?        S    15:47   0:00  \_ /usr/sbin/httpd2-worker -f /etc/apache2/httpd.conf -DSSL
wwwrun   17324  0.0  1.3 64040 6944 ?        S    15:47   0:00  \_ /usr/sbin/httpd2-worker -f /etc/apache2/httpd.conf -DSSL
 
I don't have a user named "wwwrun"...
 
1) where is this coming from in the ps output
2) how can I find out the actual user that should own the files so apache (and its extensions) can manipulate them?
 
TIA.
 
--sk.