its ok found the answer on the ntl.com
for any1 else how's not on 3mb you will be upgraded to 10mb its just the 3mb peeps are getting done 1st..
http://www.ntl.com/mediacentre/press/display.asp?id=797
I'm just as thick when it comes to overclocking but I found 3dguru to be a good source of info and help
http://www.guru3d.com the fourms are probably the best place to start.. just ask the same question you have done here