Hi Kev8551,
As you can see, there is a lot of information here on this breed and many, many nice people who are more than glad to help answer any questions. I definitely recommend learning as much as you can about the breed and if you can swing a trip to Czech or Slovakia, you are likely to learn a great deal more (as well as make several great friends).
I imported a CSV into the U.S. last year, and she will be a year old this week. I can confirm the answers to your questions:
do they like to live inside? - Sure, but they also love lots of exercise and the outdoors. Mine has made "her" spot at the foot of our bed every night.
do they like going horseback riding? You bet (just not ON the horse...)
do they like kids? Mine seems to like the way they taste (just kidding!), but she will lick the their cheeks raw with kisses if they let her.
do they like other animals? -She was a little spooked around acttle at first, but she's fine now. She loves her big sister (a german shephard mix already in our family). She really, really like chasing and catching lizards...
With regards to laws in the U.S., that will be a State or local issue. But, I have had no problems and am not aware of any state issue since they are a recognized breed by the FSS of AKC and are NOT wolf hybrids.
I am not aware of any clubs in the U.S., as I believe there are currently less than 20 CSW's distributed all over the country. But, there has been talk of the owners setting a date and place to get together.
Please feel free to contact me anytime or PM me if you would like to discuss this really beautiful and unique (though sometimes challenging) breed further.
Robert
Louisiana