A problem that I recently ran into was needing to update some network printers whose locations has changed due to network changes in our office. For the life of me, I could figure out how to see, let alone change the path to the printers while in Mac OS X Lion. The Print & Scan preferences panel was of no help that I could discern.
After a bit of digging around the CUPS system, I found that there is a built-in web interface that is turned off by default. You can enable it easily, but don’t forget to turn it off as it could be a security risk. From the command prompt:
Boom! Now just point your handy dandy browser to http://localhost:631 and voila, you have full control of your CUPS (printing) environment.
Well, to my discouragement, I still could not simply update the path for the printer, but I could at least see the path to verify it was correct. So, while not a silver bullet, it was something worthwhile posting in case I should need it again.