I cured mine from a hint fromthe "Marley and I" book-a swift knee right to the chest(solar-plex?) and she hasn't jumped up on me since-now to get her not to jump on the kids
in the book it was hilarious-the guy has a friend come over and he knees the dog so hard he knocked the wind out of him-he says I said scare him not kill him
-but he never jumped up on people again-so it has to be a pretty sharp blow to be effective