Comparing configurations

I was wondering if there is a way of opening two (or more)configurations of the same part/assembly in SW 2007. For example:part1 has configuration1 and configuration2. I'd like to comparethe differences between them (even dimensions or features).
However, the only way I found to do that is making a copy of thefile in order to open the different configuration.

Thanks,
Luiz GuardiniSolidworksGeneral