I would test this first

I have saved all files to a DVD and loaded on a new pc and when you open a page none of your pics will be on your pages when you open them. You will have to redo them.

Im sure there is a way to ger around this if you are an IT guy but for the average joe it is going to be a real pain.

Get you new pc or whatever your are doing, copy your files over and wait till you have everything the way you want it before you get ride of old pc or you may find yourself in a world of hurt if you can not find a picture or any file that is missing on a page when you open it.

Everything is a learning experience. If you do not have all your pictures and stuff organized well you will regret it. It may even be wise to have a folder/file for every page when you design a website so when or if you transfer to another computer you can find all the documents for Page "A" if file "A-documents"

Just an example. Organization is everything.