There are several sources for the message archives of PanoTools:
Searching the archives
If Google and Yahoo search don't find what you need, try searching gmane. This resource indexes over 25,000 Panotools user group messages going back to April 2000. Most questions have been asked and answered at least once.
You can also read current panotools messages at gmane. Many people prefer gmane's threaded newsreader format over Yahoo's sequential list.
(Be aware that gmane has one small oddness: most old panotools messages are not numbered in chronological order. This quirk results from moving the messages several times between archives. To avoid possible confusion, just ignore the message number.)