Both of those 2 previous methods look interesting, especially the java program that has built-in automation.

As far the PureImage front goes, I'm still trying to figure out what to do. I can create most of what I need to do using a simple Search and Replace in Notepad ++. The hard part is figuring out how to replace frame numbers in the ping images. I found a program (payware) called Advanced Find and Replace that has a feature called Cycilic Replace From File that looks like it could be the trick. Unfortunately the program costs $30.