This is how to connect to a Remote Desktop Services server using the built-in Remote Desktop Client.
This procedure may help if you are unable to connect to your remote desktop using the normal Parallels
RAS Client connection.
Click 'Start'
Type 'mstsc.exe'
Click on 'Remote Desktop Connection'
Enter the IP address of your RDS server
Click 'Connect'
Choose 'More choices'
Choose 'Use a different account'
Enter your username and password
Click 'OK'
Accept the SSL certificate