Active Directory Properties for C#

I compiled the following list of Active Directory properties, while developing a solution. This list is more comprehensive than those I found on the InterWebs.

Please submit suggestions for additions to this list, via the comment block, below!  Code thrives on community feedback. (Code is posted after the jump break...)

The Virtual PC Login Blockade

"Virtual PC Won't Let Me Log In!"

I've heard that one before.  So, you're using Microsoft Virtual PC for quality assurance (QA) testing, or for other use. Things are going fine, until after a reboot of the virtual machine (VM). When it boots, the VM operating system (OS) prompts you to log in. (See image.) No matter what you enter, the machine just won't log in! Even the local administrator credentials won't work.