1. A method for selecting configuration files for images in a networked computing environment, comprising: receiving a request for an instance based on a common base image; identifying a plurality of images for the requested instance, wherein each of the plurality of images has been previously created in a virtual machine instance based on the common base image modified by any added configuration files; identifying all configuration files that are associated with the plurality of images and have the same name but different content; receiving a selection of one of the plurality of images; receiving a selection of at least one of the all identified configuration files via an interface; and generating the requested instance, the requested instance being customized based on the selection of one of the plurality of images and the selection of the at least one of the identified all configuration files.