can anyone pleae advise me on how i can split a DVD or shrink the size of the file. I have looked at Dual Layer disc's but they are expensive. what is the max size of a blank dvd is it 4.8GB on a single layer. is there a software package out which would allow me to burn this dvd onto 2 seperate discs by splitting it, to make my back up. or can i some how shrink the size of the orginal DVD to fit on a 4.7 GB.