I'm filing for citizenship I have entered my husband's info he is undocumented alien if I am not filing for his kids do I enter their information also

It may be best to include his children in the application as your stepchildren. This is especially true if you intend to petition for your spouse or his children in the future. You can read more about the naturalization process at http://myattorneyusa.com/how-to-get-naturalized-in-the-united-states.