Create a case-insensitive apache alias

The first thing that comes to mind is mod_rewrite, which is already loaded in your config.

Assuming your files are all in lower case (this may be a dangerous assumption):

RewriteEngine On

RewriteCond %{REQUEST_URI} [A-Z]
RewriteRule ^(.*)$ ${tolower:$1} 

ps aux | egrep '(apache|httpd)' typically will show what apache is running as.

Usually you do not need to change the default user, "nobody" or "apache" are typically fine users. As long as its not "root" ;)

edit: more accurate command for catching apache binaries too