Re: Windows upd...what, now?
For those allergic to PowerShell (you can also 'net stop' instead of 'sc stop', but why?):
sc stop wuauserv
sc config wuauserv start= disabled
sc stop bits
sc config bits start= disabled
(note the space after the =, it matters)
Wrapping it all in a pair of batch scripts (or something fancier to toggle it) is a possibility.