From MS KB article here:
1 Press Start -> Settings -> Control
Panel -> Regional Options.
2 From the "Your local (Location)"
list box, choose the appropriate
location to set the user local
(Including format for Date ,Currency
,Time ,Numbers ,..etc.)
3 From the "Set default" button,
choose the language which will be
default for your operating system ,
for example if you choose Arabic as
default then the ANSI application will
display Arabic text correctly.
4 Press "OK" button then restart.
Note: Changing the system locale will take affect after the system is
rebooted, while changing the user
locale only does not required system
Changing the system locale requires
locale system administrative
privileges, while changing the user
locale does not.
I imagine selecting "English (United Kingdom)" will get you what you want.