Beginners lense help

Hello all,

I have just registered for this site as I have just bought a Nikon D40x and was looking for some advice.

I bought this camera mainly to shoot nature pictures. I am aware that the best lense for nature shots would be the wide angeled lense. Could any of you suggest a good lense for nature shots?

also I would like to take extreme zoomed in shots from a distance (eg. Wildlife in a field that I can't get too close to as it runs off) and detailed zooms of things like leaves and bugs etc. Could anyone give me some advice on a lense for this please? Also the best settings to have my camera on for both these instances. I only have the lense that comes with the d40x as standard.

Thanks in advance all!

Craig