At the time that I installed the latest Version of Esxi (v5), I have kept on that machine my initial Hard drive having Windows 2008 Server installed.
chkconfig –level 35 httpd on
This means that you want the Httpd service to auto-start for the level 3 and 5 on the next reboot.
You can confirm the change by using this command:
chkconfig –list or going even a grep on the name of the service : chkconfig –list | grep httpd