Complex sentence: Roz wins a free trip to a ski lodge-including lessons from a skiing instructor-but can't go because of her pregnancy, however she lets Frasier have her prize in return for a big screen TV.
Split into simpler sentences: Roz wins a free trip to a ski lodge, including lessons from a skiing instructor, but can't go because of her pregnancy. However, she lets Frasier have her prize in return for a big screen TV.