Divorce related questions?

  1. What proof is necessary/sufficient for alienation of affection?
  2. What proof is necessary/sufficient for criminal conversation?
    (My wife left on a business trip with condoms and sexy sleepwear in her luggage and registered into a hotel even though she spent that night at the home of mutual friends).
  3. If one person moves out of the house, what access do I need to provide to our belongings? Can I change the locks?
  4. Are retirement holdings (401k funds) in one persons name only part of the marital community property?