I just remembered the easy way.
SSH into your system and type
This will display all of the installed groups on your system.
The perfect install includes all of these:
DNS Name Server
Dialup Networking Support
Windows File Server
Server Configuration Tools
If you are missing anything then just do
yum groupinstall 'missing_groupname'
Replace 'missing_groupname' with the name of the missing group.
If your really bored, you still might enjoy looking through the 600+ line list in my previous post.