I would suggest to stick the tools i have suggested. dont try something new if you are new to flashing. the tools I have mentioned are needed irrespective of laptop or desktop. you can still avoid buying molex but in that case you will need CPU to power CK3 lite/pro.
but could i replace the molex with http://shop.01media....ProductID=38304 ?
and then use a desktop pc to power it? or do i even need it if i could use a desktop pc