The Canon 450D is a good two generations old now, so frankly should be a bloody sight cheaper than that, and frankly the lens plonked on the front is naff.
I don't know much about the D3000, but that looks a cracking good price compared to the 450D.
Got to say I've been more than happy with it but would agree that the lens is what makes the most difference between good and excellent photos, not the camera body.
Its part of the equation. Equipment, be it camera, lens etc is important, but an eye for composition and competent execution are equally important. I've seen some right crap produced from so-called quality equipment (myself included) and equally some great shots from much lesser gear.......
