Nikon releases firmware updates for the D40 and D80 digital SLR. The firmware update for the D40 includes Certification for Windows Vista and adds new USB support, extended date settings, and a number of display and menu improvements. In addition a number of problems have been resolved. The update for the D80 adds the display of additional information in the viewfinder when the brightness exceeds the range that can be controlled by the camera. Furthermore problems with in-camera editing of images have been resolved.

Nikon D40 and D80 download pages:
US Nikon D40 Firmware Update 1.10 - Windows
US Nikon D40 Firmware Update 1.10 - Macintosh
EU Nikon D40 Firmware Update 1.10 - Windows
EU Nikon D40 Firmware Update 1.10 - Macintosh
US Nikon D80 Firmware Update 1.0.1 - Windows
US Nikon D80 Firmware Update 1.0.1 - Macintosh
EU Nikon D80 Firmware Update 1.0.1 - Windows
EU Nikon D80 Firmware Update 1.0.1 - Macintosh

Read the modifications of the firmware here