DC 4.2 cannot read NDIF images. ShrinkWrap can though.
I'm under the assumption you have access to some sort of 7.1 install or installer. Why not use the 7.5NAD from Apple with an AFP bridge to the iMac and push the whole shebang over the network?
While you're at it, I'm not sure exactly how the CC will work, but creating a 7.1NAD of your own is probably possible, although I'm not sure how much better it will be than the 7.5NAD. (They really should have made a 7.5.3NAD 68K and 7.5.3NAD PPC...)
I'm under the assumption you have access to some sort of 7.1 install or installer. Why not use the 7.5NAD from Apple with an AFP bridge to the iMac and push the whole shebang over the network?
While you're at it, I'm not sure exactly how the CC will work, but creating a 7.1NAD of your own is probably possible, although I'm not sure how much better it will be than the 7.5NAD. (They really should have made a 7.5.3NAD 68K and 7.5.3NAD PPC...)