BleepingComputer.com: Vista auto-shut down

Hi, my mate just said this-
"I hate Vista so much because when it has downloaded updates it insists you restart your computer as soon as possible so only gives you the option to postpone the restarting up to 4 hours, not indefinately"
He went on to say he postponed the restart and carried on working and forgot to restart, so a few hours later it auto-shut down and he lost what he was working on.
Any advice I can pass on to him?

hello
go to start
windows update
choose change settings (left pane)

hope this helps
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Okay thanx, I passed your advice on to my mate and he replied-

"Fantastic, you're a star!
That is going to relieve me of so much aggro"

Dunno if he means you or me so we'll do a 50-50 split..