First off, D-ICE only comes as part of the harware you buy? If so I'll
have to assume I don't have it and can't add it.

Second, the undo function you mention - wouldn't that undo the dust
removal as well? I don't understand. If I could at least halve the time
spent, then I would obviously double my output. Or am I not
understanding the total functionality of Photoshop? Is there an undo
fuction you can apply to certain areas only? How would you know which
areas?

Jim