System Views text in SQL Server 2005

exec sys.sp_helptext ObjectName

select text from syscomments  where id =
OBJECT_id('objectname')
order by colid

-- This generates view definitions
--
select definition + char(10) + 'go' + char(10)
  from sys.sql_modules c
  join sys.objects o
    on c.object_id = o.object_id
  join #views o2
    on o.object_id = o2.object_id

select o.name
      ,o.object_id
  into #views
  from sys.objects o
  join sys.schemas s
    on s.schema_id = o.schema_id
 where o.type in  ('V')
   and s.name = @schema

SELECT * FROM sysobjects
WHERE name LIKE 'dm_%'
order by name

exec sp_helptext   N'sys.dm_os_sys_info'

CREATE VIEW sys.dm_os_sys_info AS
    SELECT *
    FROM OpenRowset(TABLE SYSINFO)