I'm on a 98 machine right now but I assume it's the same for vista. Go to control panel and open 'keyboard'. Choose to add a language and choose English (British). Then 'apply' and 'OK'. It puts an icon in your taskbar that allows you to switch between the two types.
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Purch hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.