When prompted click:
"Continue to this website (not recommended)"
then log on using your username in this format:
Remote Desktop 2000
When you click this box you will be prompted along the top of the screen:
You must enable this. Click on the vanilla colored bar then click "Run Add-on"
64.28.41.5 = WLS-TS1
64.28.41.4 = WLS-TS