Isa- I sold my two point & shoots after I saw what a DSLR can do. The D40 is probably the least expensive new DSLR out there, and probably the smallest and lightest. You could save money by getting one used as well. If you can, go to a large photo store and handle some examples and take some test images. If you can, bring your own memory card(s) to put them on. Otherwise a laptop to upload them to, so you can look at them later. I'll see what I can find out for you on another forum.
Here's a start:
http://www.fredmiranda.com/forum/topic2/485437/0#4190333
http://www.fredmiranda.com/A18/
Perhaps search this forum as well:
http://www.fredmiranda.com/forum/board/44