Hi is this possiable MiniDVI to DVI to HDMI also could you tell me if once I have connected up my macbook to my LCD TV, is there any way to close the mack book and only use the TV as the main screen?
Yes you can (I had my MB connected to my HDTV this way) and yes you can. Working the macbook in closed lid (clamshell) mode is discussed on the apple site.
Go reading! Finding the information yourself is the fun part
EDIT: I found where it is mentioned on the apple site, but it was SO easy to find that i wouldn't want to insult your intelligence by posting a link