Kris Bochenek , Oct 05, 2009; 07:24 p.m.
Since you mentioned that you want to shoot indoors I would go for D3000 or D90 not a D40 that last is a older camera and it's high ISO capability is not as good as the other two.
Also 11 point focus beats 3 point and last D40 is 6MP and D3000 or D90 are 10.2 and 12MP
if I were you I would get D90 for it's ability to focus with older lenses such as 50mm (+/- 100 USD)
and it's ability to handle high ISO better. So if money allows go for D90.
However if you are not going to use AF lenses just get D3000.