Should have included this in my original question....After checking some more, it looks like the plugin is giving the camera location information in millimeters after changing the ruby script as TIG suggested. However, if you try to input new coordinates based on millimeters, the plugin calculates them as if they are inches. That would explain why entering an x value of 5000 and pressing Send Data gives a camera position with an x value of 127000. 5000 inches = 127000 mm. When I changed the models units to work in inches the plugin was great.
Unfortunately anything beyond "find x and change it to y" gets out of my ruby script writing ability. This is a really valuable plugin and any suggestions on making it possible for those of us working in the metric system to use it would be much appreciated.
Again, thanks very much in advance.