Thanks for the article. When following the instructions for Windows 7, I received the error notification "System repair disc could not be created. The parameter is incorrect (0x80070057)".
After a bit of googling I came across a comment on sevenforums.com from misterlance suggesting "The problem is most likely caused if you have a Truecrypt volume mounted when trying to create the system repair disc. Simply dismount the Truecrypt volume, clear the error, and the system repair disc will be created. ".
He was right. With thanks to misterlance and hoping this might save others some googling