I did some digging around and found a tool called ResMerger (in /Developer/Tools) that looks really useful for a task I'm trying to do. Unfortunately, it doesn't fix ID conflicts - instead, it just reports that there were resources with the same ID. What I'd like to do is automatically reassign the resource IDs across the various files before running ResMerger on them, but I haven't the foggiest idea how to do this. I suppose I could write a little command-line Carbon tool that does the job... I'm rather new to Mac OS X programming in general, at least with Xcode. I'm a Java developer, so all this Carbon/Cocoa stuff is new to me. Also, I don't care about most of the resources - only one type of resource interests me. If I need to run this again with a different resource type, I have no qualms about finding the type in the code and changing it.