Laptops!

I am thinking about getting a laptop very soon and I was wondering if I could take it on-board my flight?

If I can is there anyway to 'get power' from the aircraft aswell as my battery?

Also I have heard people talking about you having to leave your laptop on while in the airport? Is this true? Are there any other 'rules' for taking laptops?

Thanks!

[preiffer]

Hi Waddy,

A quick go with the Search Function on the site would have revealed this thread and this thread - both started recently.

I'm going to lock this one to prevent duplication - please direct questions/answers there.