I've just burned the disc from the ISO and when I try and run setup I get: "The file 'autorun.dll' could not be loaded or is corrupt. Setup cannot continue. Error code is [E 0xE0000100]" I have found a knowledgebase article referring to a problem installing Vista giving this error but nothing on Windows 7. I am running Windows Vista Business on a Dell Inspiron 6400 with a 62.4Gb C drive with 12Gb free and a 9.99Gb Recovery partition with 5.45 Gb free. Thanks for reading this far.... Any help would be appreciated.