I can help you...
Basically what you need to do is go to your online VPS pannel (provided by virpus)
login with the information they gave you, make sure your server is online.
Then you need to open an SSH connection (usually through puTTY)
login as root, with the password you were given
type "vncserver" without quotes.. then you can close the SSH connection.
Now open your UltraVNC viewer, and put the IP:1 in the hostbox. (like if your IP was 80.80.80.80 you would put 80.80.80.80:1)
Hit connect and it'll prompt you for a password, use the one you set when setting up the VNCserver.