In order to add a logo to the frame you must first take ownership of C:\Windows\System32\authui.dll. You can do this by doing the following using explorer, navigate to the System32 folder, right click on authui.dll, click on properties, click on the security tab, click on advanced, click on the Owner tab, click on the Administrators group, then click apply. Click on the permissions tab, click on administrators, click on edit, tick the allow box for the full control permission, click OK on any remaining dialog boxes.
Using the resource editor open the authui.dll file, browse to bitmap, then to 12223. Then you want to export/save the file as a bmp file.
Open both your desired image and the bmp file in the bmp editor. Resize your desired image to roughly 120x120. Copy the image to the picture frame and position as desired. Once everything is the way you want, save the file.
In the resource editor again, you want to replace the 12223 bitmap with the custom image created. After this is done, save authui.dll and you should be able to see the effects immediately, if not reboot.