synchronize and backup

["Gianluca Miscione" <gianluca.miscione@xxxxxxxxx>]

Hi,
I have a problem, maybe someone has a good solution.
I was backuping my data on cds. when the data excedeed 650MB, I've
started not to save old folders.
I've put other folders on other discs.

Is there any (cheap/free) easy way to retreive and compare all data in
order to have all my data on a newer and bigger hd?

thanks a lot

gianluca