What are you finding deficient in the kit lens? That would give us some idea on what lens to suggest. If you just want better photos, a lens upgrade might not fix the problem.
How long have you been shooting in manual settings?
I recently bought a Nikon D40. It came with the 18-55mm lens, I then bought a fisheye wideangle lens and love it but I am looking to upgrade to a better lens than the first one I got.
What should I be looking for? I am very amateur when it comes to photographer and don't want to go crazy with lenses but again I would like something better.