Ok I will try this out but doesn't my PC need to run some software too?Yes but you need to:
1. Make sure that your wi-fi is enabled and you are connected to your home network, as should be your PC.
2. Make sure you have the correct IP address of your PC. Probably 'ipconfig' in the command line.
3. Have a service/protocol/client running on your PC (I use tightvnc).
4. Open Remina and plug in the IP address details, click connect.
Obviously both the pandora and the PC need to be connected to the (same) network.
I have literally just done it to make sure that what I am saying works!
Let me know how you get on.
Do as DoubleDash suggested and install tightvnc on your PC.
Open that with the Run TightVNCServer choice from the system menu.
It will minimise to the system tray area near the clock on a windows PC.
Double click the icon for VNC Server and on the first Tab 'SERVER' hit the SET button for Primary Password. Enter a password.
Get your PC's IP address (192.168.X.X etc) from ipconfig in a cmd window.
On the Pandora open Remmina.
Click quick connect and choose VNC for Protocol type from the drop down menu.
Add the IP address into the Server box.
Click connect and it should prompt for the password and then you should be able to control your desktop PC.
To save the connection for quicker set up, simply choose NEW with the +icon, name the connection, choose VNC as protocol again and again add the IP in the server box, the password in place and then shift-drag the window to get to the Save button. Then highlight your named connection and hit connect.
I'd like to thank DoubleDash for his instructions as I'd previously never got around to trying Remmina and didn't have a clue how to.