Norton ghost is indeed the way to go and NOT dodgy.
But make sure that your computer (i.e. the motherboard and Norton) does recognize the full 160GB, and not only 120GB or even 32GB. Because than it might become "dodgy" as people warned you.
Another nice program that boots from a floppy disk and needs 2 physical drives to create an identical clone:
It's called "PC Inspector CloneMaxx" and works fine, used it a couple of times. Especially good for broken drives that you need to clone one last time to get as many data from it as possible:
Download for floppy disk creation:
http://download.pcinspector.de/pci_clonemaxx.exe
ISO for bootable CD:
http://download.pcinspector.de/pci_clonemaxx.iso
Download.com:
http://download.com.com/3000-2094-10...ml?tag=lst-0-7