Hi, newbie question. Have a D90, which lens next?

Hi everyone!
I am a newbie to this website, and hoping to get some help from people who know about lenses!
I have just purchased a D90, with an 18-105mm lens and am wondering which lens to go for next. Im interested in travel photography, animals, landscapes.... the usual I guess. I used to own a Canon 350D and had a 75-300mm lens with that, which I enjoyed using.
Any suggestions?
Cheers
Cathy
I am a newbie to this website, and hoping to get some help from people who know about lenses!
I have just purchased a D90, with an 18-105mm lens and am wondering which lens to go for next. Im interested in travel photography, animals, landscapes.... the usual I guess. I used to own a Canon 350D and had a 75-300mm lens with that, which I enjoyed using.
Any suggestions?
Cheers
Cathy