Make sure that it is not on the no flash mode (the circle with a crossed out flash)
Nikon d40 is great and is plenty even as of this writing 8-5-09 http://www.kenrockwell.com/nikon/d40.htm
You can buy a remote for the Nikon D60 but not the Nikon D40
A Nikon D40 kit can be purchased from the Amazon website. The Nikon D40 is a camera that is highly rated by people who have bought it and provided feedback on the Amazon site.
The Nikon D40 camera is a discontinued mode. However, the Nikon D40 can still be found on eBay, Amazon among other online retailers. Best Buy has refurbished D40 cameras for sale.
They are virtually the same same; they have the same dimensions, the d40 is slightly lighter.
The D40 has less megapixels but is better at high isos, so is more sensitive.
All lenses with Nikon mount are compatible with Nikon D40. If the question rephrase : "What lenses are able to autofocus with Nikon D40", then the answer is : the new Nikon AF-S lenses (with Silent Wave Motor inside), Sigma lens bearing HSM code, and upcoming Tamron lenses (18-200mm, 17-50mm and 70-300mm).
Yes
The Nikon D40 camera is available at most electronic retailers that sell computers, cameras and other electronics. Future Shop and Best Buy are two retailers that sell Nikon D40 cameras.
pixies and fairy-dust
The Nikon D40 has a very bulky look to it and is very stylish. It comes with 18-55 lens that is removable and is available for approximately $599.00 US dollars.
A review of the Nikon D40 and D40x digital cameras by Nikon expert Thom All of those things come into play when choosing between a D40 and a D50, You can find the full comparison of current Nikon DSLRs here if you want the full list.