swap the " & @ keys on keyboard

In XP it is control panel, regional and language options then on languages tab click options and then the settings tab you can set the input language you want there.

click the keyboards and languages tab, then click change keyboards, then add and select English, United Kingdom. Once you have done that select the US keyboard and click remove. If it gives you an error message don't worry it will remove it later. Make sure that English, UK is in the default drop down and then click apply