Unable to load Complete Step Page to user once User Registration over

I am using MembershipWebpart. I ahve placed some custom controls in that CreateUserTemplate . here i am checking the page where i have placed my web part with Query string .and other two condition with two list i am facing two issue here

1) After User Created his account he remains on the same page with control what i have created
existing controls "CreateUser Cancel Captha etc are disappearing . controls what i have created Still appering
2) I need to some Sp.UI. Notification once user registration over how can do it can you provide