Hey chimchims, don't know if you already solved your problem, but I think this should do it
(This is using XP by the way) Start -> Control Panel -> Regional and Language Options
Then click on the Language tab, and then the 'Details...' button. There in the 'Text Services and Input Languages' box, if you set the 'Default input language' to 'English(United Kingdom)', and then click OK, that should set your keyboard right. Also if you look at it before you change anything, it might have been set to 'US' previously.
Hope that helps