Zenboodah, one of the peeps in Flickr’s Nikon D40 pool, has posted a neat how-to to improve the performance of the built-in flash: a cardboard diffuser/bounce box. Worth looking at until I can afford the oft-recommended Nikon SB-400 speedlight, I think.
UPDATE: After a long time, I’ve now found an updated/replacement tutorial.
The Wired Jester 
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