Help! A Way To Access Various Back Up Files - Without 100S Of Folders!

[joko]

I have loads of windows backup files from old PCs,
i can access my files etc on MOST of them - but - there are now 1000s of unidentifiable nameless ZIP files, which first need to be extracted,
which then opens 1000s of nameless folders,
(all named with just numbers)
& each folder has about another 5-8 uunidentifiable folders, all inside each other, & i have to click on each 1, in order to see whats in it, which is usually just 1 or 2 items.
Its also not necessarily my personal stuff in them, its a muddle of everything that was on my computer.

How can i get everything out of all the endless folders to just show all together?
It will just take for ever to go through them all like that.

There must be some sort of software that can get rid of all the folders?
Or take everything out of them?
Or just let me the see the actual data on its own?

I tried simply doing a windows explorer search of the whole backup & of various sections of it, using various folder extensions - all jpegs etc - but it doesnt work :(
HELP!
thanks :)