The configure device dialog box is used to configure a device for use with ThiefAware. The source button displays the source dialog box. This is used to select the video capture source, if you have more than one, and to configure that source. The format button displays the format dialog box. This is used to set the size and compression of the pictures that will be sent to ThiefAware. Be aware that a picture size where the sides have been doubled will take four times as much hard drive space. The compression value must be set to RGB 24 for ThiefAware to work properly. I haven't tested with other values, but I expect they would cause the thumbnail generator to generate garbled thumbnails.
The display button is disabled on most systems as its functionality is duplicated in the source dialog box. The compression button does nothing at this stage. Later on I am thinking of adding image compression with software compressors to ThiefAware, which is why the button is here.