Ed-

>Tell it you want to target an output file written to the CD-RW drive rather than a target device.

It's been a while, but my problem was that the CD-RW is on my desktop and I wanted to image my laptop. Couldn't figure out how to get to, when it rebooted to DOS to do the image, let me map the network drive, and didn't pursue it far enough to decide whether I was suffering from brain farts, or what.