I have one dog crated but she has been used to it since a puppy as they all have.
The others aren't crated anymore and it doesn't cause any problems for us as they just seem to accept that when we go out then Annie goes to her crate.
In fact she just takes herself off to it when she sees us getting ready to go out. Just follow the steps that you have been given and she should feel 'at home' in it.
The only problem I have is that they all want to go in it when we go out and it just isn't big enough