What lead do i need to connect my computer to my tv and use it as a moniter? the leads i look at have screws attached to them on both ends but the laptop does not. can anyone clarify this? ie is there a lead available which only has screws on one end only?

Firstly, are you trying to connect pc to tv or laptop to tv or pc to laptop? If you are trying to connect a laptop to tv, then there are various ways by which you can do so. As you've described in your question, it seems like it's a VGA cable which has two screws each at both the ends. If your tv accepts the VGA input, then don't worry about the screws. It is not necessary to screw them up, means if there is no provision in a VGA port for screws then just attach the cable and let the screws hang loose on the VGA plug. Other ways of connecting laptop/pc to tv are by using a HDMI cable, or S-video cable (both 5pin & 7pin), or component cable, etc. But only attaching the cable won't serve the purpose, you will have to do certain settings in the graphic properties of your pc. Hope this helps.