I have a love/hate relationship with Norton Ghost. When it works, it's possibly the most amazing program on the face of the planet. But there have been times when I have spent hours upon hours trying to get it working when it screwed me, or failed to work where it had worked 100 times before.
Step by step procedures vary by version. If I was using 6.0, I'd say the best way is to make a boot disk and do a network transfer to a laptop. Then burn it on to CD. The problem with this method is you have to make a book disk through ghost, which can be a huge pain. Lucky for you, I think that the boot disk for the IBM is listed in Ghost natively. Unfortunately, you're going to need an IBM external floppy drive to do this, and they aren't cheap.
Your other option is to do what I have been doing lately. Ghost 2003 and above have the ability to work with USB. So, you could actually take the hard drive out of the device you want to image, place in an external USB drive enclosure and connect it to the computer with Ghost on it, and make the image. There is a minor complication for you here too, however. The 4690 uses a Notebook (laptop size) hard drive. So, you'll need an $14 adapter to convert the pins and power from standard IDE to notebook interface. But that's really a minor issue.
Decide which method you think will work best in your case, and I will post some more information for you. If you're comfortable taking the hard drive out, I'd go with USB option. There are less steps, and fewer complications. For that you'll need Ghost 2003 or better, an external hard drive enclosure (without a hard drive, I have seen these as cheap as $25), and the adapter to convert the drive sizes.
Good luck.