I didn't know that 'my' was scoped to a file, however I have tried using 'our' in the separate Config.pm file and it still doesn't work either. Only when the "package" is in the same file does 'our' work. Any shouldn't 'my' work in that situation as well?
I just renamed my module to 'Config11.pm' and it works fine now. What a drag -- I didn't realize that Config.pm would collide. Why didn't perl warn me that I was stepping on a built in package of core significance? Or did perl just include the core "Config.pm" module and mine never actually got loaded?