i am trying to install ubuntu on windows 8. My system does not have the SecureBoot and UEFI option. i downloaded the ubuntu 12.04 iso file frm the website. it contains WUBI.EXE. when i run wubi it starts downloading an ISO file for ubuntu again. I tried the option of putting the ISO file and Wubi.exe in an empty folder and then running it but it still downloads a new ISO. cant i use the ISO i already have?