Ok i have burnt the cd but whenever i put it into the system is comes up with CD/DVD Error.
I used a Verbatim DVD-RW cd and burnt at 2x on my mac.
What could i have possibly done wrong?
I seem to recall sometimes it says CD/DVD error even though it's fine. Try rebooting the RNS by holding <, > and the star witht hen disc in and see what happens.

Otherwise you might be better buying DVD-R's not RW's, I'm not sure what difference it makes (in theory they should both work) but I know the units can be fussy.