Active Directory Users and Computers

Active Directory is used to create and manage users on a specific domain.  From here, I can add users and determine what permissions they will have as well as control the different aspects of their domain account.  I can also manage physical computers in my domain by adding them to specific groups, renaming them, and many other things.

DHCP

I use DHCP to control the IP Addresses each computer gets in my domain.  I choose to use reserved IP Addresses for the computers currently in my domain.  To do this, I have to look up the MAC Address for each computer and then add it to the Reservations folder and assign it an IP Address.  If someone brings over a computer that is not in my Reservations folder, that computer will be assigned the next available IP Address within the Scope of my domain.

Microsoft Exchange System Manager

Exchange is a very powerful email system which has this handy System Manager to manage user accounts and settings.  From here, I can check mail ques, edit global address lists, and many other things.  I recently had to route my email through the Mediacom mail server because some mail servers block email that comes from a private server. 

Microsoft Internet Information Services (IIS) Manager

I use IIS primarily for my FTP and Web sites.  Within IIS, I can manage web site and FTP settings and permissions, create redirections for web sites, and manage my Exchange webmail.  FrontPage extensions are also displayed in IIS, which I can use to remotely access my web site and work on it.