Welcome to the forums.
Bono, trust us, this will be your pet almost more than you want it, and less your daughters. As another member said today, you will end up caring not only for the chameleon itself, but also the several live plants that it lives in and also the live food/insects that it consumes.
As Elisa above said, Veiled Chameleons
(Chamaeleo calyptratus), or Panther Chameleons
(Furcifer pardalis) are a great place to start. They are both medium-large species. Chameleons should never be frequently handled- and your daughter Must understand that a chameleon is not a pet lizard that you take out of its cage to hold and look at, play, or what not. They are to be enjoyed from a distance once and a while and to be given their space. Hope this isn't deterring you, because as soon as you get one, you will understand why so many of us are satisfied with sitting back and watching them from a chair some feet away.
I haven't personally dealt with Chameleon Corral, as I live in Canada, but the owner is very kind is will go out of her way to make you happy. You could arrange to buy as a pick up or alternatively you could meet her at the
North American Reptile Breeders Conference & Trade Show (
www.narbc.com) in Tinley Park, IL on October 7-8th.
The cage and habitat should be setup in advance of getting the chameleon, so don't plant to buy chameleon and cage at the same time.