Access is denied when trying to install via partition

Hi. I'm trying to install W7 32-bit via partition/iso as per this link: Install Windows 7/ Vista on your Hard disc Without using any DVD/CD or Pendrive (USB drive) Although when I try to go through the step where you need to copy boot/bootmgr into the C:\ drive, it says "You need permission to perform this action". My account is an administrator with all access rights, and I did right click -> properties -> security and tick all of the boxes for my account to have permission, but as its setting the parameters it says that C:\Boot, C:\hiberfil.sys, C:\Programs and Files, and a few more that I can't remember the name of are "denied." Any help would be appreciated. Running Vista 32-bit SP2.

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