How to move windows on screen ?

I can restore, minimize, maximize windows like that:

$hwnd=(Get-Process notepad).MainWindowHandle
[Win32.NativeMethods]::ShowWindowAsync($hwnd, 4)

But how to move its(windows) using powershell?

I do not know what version of ps is installed on my windows7-32. It seems v1(I started powershell.exe from v1 folder)