Hi Dave Hope things are ok with you. You may already be able to do all this but just in case its usefull to you (or the girls) im sending this link to channel 4 video on demand.
formatting link
Its free to sign up and there are both free and pay for programs available and looks okay on the computer. You can also watch it from the pc to the tv proving you have compatible connections which your toshiba has bot perhaps not older tvs. Regards dave