administrators group is deleted...

I deleted "administrators" group and "administrator" user in sql server by
chance.
How can I create them back.
Thanks in advance.I mean;
MyServer\administrator
BUILTIN\administrators
"haode" <haode@.hao.com> wrote in message
news:u8R%234Tf9DHA.1816@.TK2MSFTNGP12.phx.gbl...
> I deleted "administrators" group and "administrator" user in sql server by
> chance.
> How can I create them back.
> Thanks in advance.
>|||Log is as SA and you should be able to do it.
"haode" <haode@.hao.com> wrote in message
news:u8R%234Tf9DHA.1816@.TK2MSFTNGP12.phx.gbl...
> I deleted "administrators" group and "administrator" user in sql server by
> chance.
> How can I create them back.
> Thanks in advance.
>