how can i install windows 7 over ubanutu. I have the files saved on my external HDD and on a dvdr but ubanutu will not open them. I dont really know how to use ubanutu very well, can someone offer guidence?
If you want a hard disk install, you really need to install Windows 7 first on half the HDD then Ubuntu second. You could keep your Ubuntu install unchanged and run Windows 7 as a virtual machine. It runs well in Virtualbox which is easy to set up.
p.s. Don't use the version of Virtualbox that's in the repositries as this is the open source edition and has no USB support.