Install Linux from Windows 7 Without CD/DVD or USB Drive

Update Sorry, Question has multiple parts see below for details:
I have been using Windows for many years and only used Linux from the command line, but want to shift after realizing Windows is sloowww.

Following http://mightydreams.blogspot.in/2007/09/i-am-describing-here-method-to-install.html and http://www.instantfundas.com/2007/08/install-any-linux-distro-directly-from.html

Is there a better set of instructions? (I do not have a USB or CD/DVD)

Have got "debian-7.0.0-amd64-DVD-1.iso" and disks 2 & 3 and renamed 1 to d1.iso. Step 2 says to copy vmlinuz and initrd.gz to the \C drive

But I found these files in 3 places (I did a 7z.exe l -path-to-iso- >files.list)

install.amd\gtk\vmlinuz
install.amd\vmlinuz (update plan on using this but stuck at grub see below)
install.amd\xen\vmlinuz

And similarly:

install.amd\initrd.gz 
install.amd\xen\initrd.gz
install.amd\gtk\initrd.gz

Which one to use?

Stuck at grub …

Made the entry using bcdedit but it says grub is not valid. downloaded grub from the sourceforge site, copied it and pointed to it

bcdedit /create /d Linux /application  OSLOADER
bcdedit /set  {c1e718e7-3d90-11e1-a4c8-b5a356ae5e29} device partition=c: 
bcdedit /set   {c1e718e7-3d90-11e1-a4c8-b5a356ae5e29}  path \grub\grub.exe

bcdedit -v

Gives me

Windows Boot Manager
--------------------
identifier              {9dea862c-5cdd-4e70-acc1-f32b344d4795}
device                  partition=\Device\HarddiskVolume2
description             Windows Boot Manager
locale                  en-US
inherit                 {7ea2e1ac-2e61-4728-aaa3-896d9d0a9f0e}
default                 {c1e718e2-3d90-11e1-a4c8-b5a356ae5e29}
resumeobject            {c1e718e1-3d90-11e1-a4c8-b5a356ae5e29}
displayorder            {c1e718e2-3d90-11e1-a4c8-b5a356ae5e29}
            {c1e718e7-3d90-11e1-a4c8-b5a356ae5e29}
toolsdisplayorder       {b2721d73-1db4-4c62-bf78-c548a880142d}
timeout                 30

Windows Boot Loader
-------------------
identifier              {c1e718e2-3d90-11e1-a4c8-b5a356ae5e29}
device                  partition=C:
path                    \Windows\system32\winload.exe
description             Windows 7
locale                  en-US
inherit                 {6efb52bf-1766-41db-a6b3-0ee5eff72bd7}
recoverysequence        {c1e718e3-3d90-11e1-a4c8-b5a356ae5e29}
recoveryenabled         Yes
osdevice                partition=C:
systemroot              \Windows
resumeobject            {c1e718e1-3d90-11e1-a4c8-b5a356ae5e29}
nx                      OptIn

Windows Boot Loader
-------------------
identifier              {c1e718e7-3d90-11e1-a4c8-b5a356ae5e29}
device                  partition=C:
path                    \grub\grub.exe
description             Linux