Importing Customers to CS Cart

I need to import my existing customers from my old cart.

Can I just import in the cscart_users table or do I also need to add all the shippping address to cscart_users_profiles? I hoping the user would just be prompted for these addresses on their next order.

Also how do I handle the encrypted passwords?

I was also wondering about this. I think is the passwords in the source db are not encrypted a script could be written using the function in cs-cart. What cart are you migrating from?