I have a MacBook from late 2007 and an iMac from mid 2011 and would like to view the MacBook on the big iMac 27" display , is there a cable to do this please?
Yes. You need a cable with a Mini-DisplayPort on one side and a connector for the type of video-out port on the MacBook. This is a Mini-DVI (VGA, Composite and S-video with adapter).
Thanks, but I don't seem to have any ports at the back of my iMac that can accept that?
You are attempting to use Target Display Mode however your MacBook is too old, please carefully read Apple's Target Display Mode: Frequently Asked Questions (FAQ)
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