Those steps look nice but they look a bit steep to me. I have had enough difficulty getting Gracie to use the standard kind. I bought the plastic pet steps at PetCo for use with my sofa. They are fairly flimsy. What I really like are the foam ones that I ordered for use with my tall bed. Shipping was fast and they look great, and they are not heavy like wood.
http://www.geocities.com/mcpetsteps/