I have an .iso that is too big to fit on a single cd and I think I need to put the .iso on 3 cds. How can I go about this? I tried burning the file with Nero and Alcohol but they kept saying the file is too big.
There is a way round this... Download http://www.smart-projects.net/isobuster/ It will read the iso and list the contents so you can install the program to your harddrive without the need to burn to a disc.
How big exactly IS this file? Applecorp: your technique technically works but there is a MUCH easier method Use a virtual drive (clone, alcohol, daemon, cdrwin, etc) to mount the drive (which also lets you extract) and then you can install