Ever since I upgraded to Windows Vista x64 I have been unable to use tsadmin to manage terminal server sessions on my servers. Well today I decided to attempt to figure out what was going on. Now apparently there are other issues noted by Microsoft in KB article 930056, but this didn't solve my problem. Here's what did though..
So, you need to remote into a computer but don’t have RDP enabled. This script will keep you from getting up from your desk by enabling Remote Desktop.