Danielle,
If it has a round barrel and the metal band all the way around the wooden fore end and the barrel, like in the photo, it should also have a small ring on the otherside of the receiver. You haven't mentioned that so I am thinking it is a rifle and not a carbine style. Carbine are "just" short versions of a rifle in simple terms.
I know you do not know much but I would really need to know the condition of the rifle. Pics would be a geat help. For comparison sake the first phot I posted is about a $1200 gun. The next one below is probably worth $900 and the bottom rifle is a $3000 gem. They are all the same type of rifle from just a few years apart but the condition is dramatically different between them. That is why I hesitate to tell "what your rifle is worth" I could be so wrong because I can't see it.
Tell me about the little ring and try to send a few photos.
2bit