Inside Pics Of The Vigina I Own A Canon Rebel XT And Need To Take Pics Of Inside Houses...which Is The Best Wide Angle Lens?

I own a Canon Rebel XT and need to take pics of inside houses...which is the best wide angle lens? - inside pics of the vigina

I was asked to try to picture in their homes to real estate to the list, but I still am learning digital photography. At the moment I have two big glasses, but not good for photos inside. Need a relatively high quality ... paid when in Nice.