In the main component area that displays a list of videos, is their any way to configure the size of the video picture that is used and to change this to a two or three column layout or a layout in which grid of videos is displayed. Or is the current long list of videos with a small pic, the only option available. I know you can do alot of these with modules, but is there any way the components display can be customised.

Do you mean the ajax listing?

you can find those code in

function displayInfo
in model / jvideodirect.php