I second the Breckenridge area as a great place to spend a week- should be cheap to fly into denver, then you can either take a van to the mountains, or rent a car and drive up (about 4 hrs). (I plan elaborate ski trips every year, and this year we have got a 10 day trip at 1600 per person including flights, lodging(ski in ski out), transport, ski rentals and food estimate set up to the western rock