Open And close

hey guys...some people..come to my site and said this is bad..site..so.i need..some help
how do we close the registrations for few day?and.how do..we make a portal?

Administration Panel=>Users & Groups=>Users=>Users options=>Members=>Allow new members=>No=>Save.

hey sir..1 question..how can we delet some members..for now?

Administration Panel=>Users & Groups=>Users=>Search users=>click user's name=>Special admin-only fields=>Delete this user=>tick the box=>Save.

Also,you can delete unactive member's accounts:

Administration Panel=>Users & Groups=>Users=>Handle users=>Management=>You'll know what to do from there.

Subin wrote:how do..we make a portal?

admin panel>modules.portal>show portal yes(click save)
you can add what you want in there by clicking portal structure