So I have been watching all these tutorials all over the "interwebs" about flashing my Xbox Slim.

Now I have come up with a question that is in the way of me flashing the console.

So I know that you have to get the new [ Register or Signin to view external links. ] in order to flash Xbox Slim but, also there are these other things that the tutorial says me to get, even tho' I think are not necessary.

Ex. [ Register or Signin to view external links. ] Which is supposed to "convert" your SATA cable to USB and connecting it easily to the PC.
But cant I do it by just attaching the SATA cable right from the DVD drive to my PC SATA port?
(This particular part costs around 50$.)

Then there is another part called [ Register or Signin to view external links. ] .
And this part is meant to get the power to the Xbox's DVD drive.
But again cant this be done by simply connecting the drive on to the Xbox's built-in
power source.
(And this particular part costs around 25$)

So long story short my main purpose to this post is to ask, do I really need those "extra" parts or can it just be done like I said, without the external "connectors" and by saving a lot of money from stuff I really don't need.

Just so you know, I have looked up at THIS tutorial and my DVD drive is Liteon DG-16D4S 0225(SLIM) so all the parts and the whole tutorial can be found there under that tab.