What is the program code to shutdown the pc in visual basic

I was wondering if someone could help me to convert this vb6 code to be used
in VB.net. It basically allows you to call the subs at the bottom to logoff
shutdown and restart the pc (By force if necessary). Any help is greatly
appreciated.

Private Const EWX_LOGOFF = 0
Private Const EWX_SHUTDOWN = 1
Private Const EWX_REBOOT = 2
Private Const EWX_FORCE = 4
Private Const TOKEN_ADJUST_PRIVILEGES = &H20
Private Const TOKEN_QUERY = &H8
Private Const SE_PRIVILEGE_ENABLED = &H2
Private Const ANYSIZE_ARRAY = 1
Private Const VER_PLATFORM_WIN32_NT = 2

Type OSVERSIONINFO
dwOSVersionInfoSize As Long
dwMajorVersion As Long
dwMinorVersion As Long
dwBuildNumber As Long
dwPlatformId As Long
szCSDVersion As String * 128
End Type

Public Type LUID
LowPart As Long
HighPart As Long
End Type

Public Type LUID_AND_ATTRIBUTES
pLuid As LUID
Attributes As Long
End Type

Public Type TOKEN_PRIVILEGES
PrivilegeCount As Long
Privileges(ANYSIZE_ARRAY) As LUID_AND_ATTRIBUTES
End Type

Private Declare Function GetCurrentProcess Lib "kernel32.dll" () As Long
Private Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal
ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As
Long
Private Declare Function LookupPrivilegeValue Lib "advapi32.dll" Alias
"LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As
String, lpLuid As LUID) As Long
Private Declare Function AdjustTokenPrivileges Lib "advapi32.dll" (ByVal
TokenHandle As Long, ByVal DisableAllPrivileges As Long, NewState As
TOKEN_PRIVILEGES, ByVal BufferLength As Long, PreviousState As
TOKEN_PRIVILEGES, ReturnLength As Long) As Long
Private Declare Function ExitWindowsEx Lib "user32.dll" (ByVal uFlags As
Long, ByVal dwReserved As Long) As Long
Private Declare Function GetVersionEx Lib "kernel32.dll" Alias
"GetVersionExA" (ByRef lpVersionInformation As OSVERSIONINFO) As Long

Private Sub EnableShutDown()
Dim hProc As Long
Dim hToken As Long
Dim mLUID As LUID
Dim mPriv As TOKEN_PRIVILEGES
Dim mNewPriv As TOKEN_PRIVILEGES

hProc = GetCurrentProcess()
OpenProcessToken hProc, TOKEN_ADJUST_PRIVILEGES + TOKEN_QUERY, hToken
LookupPrivilegeValue "", "SeShutdownPrivilege", mLUID
mPriv.PrivilegeCount = 1
mPriv.Privileges(0).Attributes = SE_PRIVILEGE_ENABLED
mPriv.Privileges(0).pLuid = mLUID
AdjustTokenPrivileges hToken, False, mPriv, 4 + (12 *
mPriv.PrivilegeCount), mNewPriv, 4 + (12 * mNewPriv.PrivilegeCount)
End Sub

Public Sub ShutDownNT(Force As Boolean)
Dim Ret As Long
Dim flags As Long

flags = EWX_SHUTDOWN
If Force Then flags = flags + EWX_FORCE
EnableShutDown
ExitWindowsEx flags, 0
End Sub

Public Sub RebootNT(Force As Boolean)
Dim Ret As Long
Dim flags As Long

flags = EWX_REBOOT
If Force Then flags = flags + EWX_FORCE
EnableShutDown
ExitWindowsEx flags, 0
End Sub

Public Sub LogOffNT(Force As Boolean)
Dim Ret As Long
Dim flags As Long

flags = EWX_LOGOFF
If Force Then flags = flags + EWX_FORCE
ExitWindowsEx flags, 0
End Sub