Using English language on a Danish version of WinXP Home SP1

My husband lived overseas (Denmark) and bought WinXp Home
overseas as well. It is a danish version, but now that he
lives in the USA with me -- we'd like to install an
English version, since I can't speak a lick of Danish but
he can comprehend English.

We did a clean-install of XP & reformatted the drive, and
when it asked us which language to use - we chose English,
but when it asked for the keyboard settings - we chose
Danish, so that he can use his alphabet when emailing his
family/friends. (We have a keyboard with the added danish
characters.)
But when we restarted the comp, everything was STILL in
danish!! I have heard that I can make my own windows
login & have English (USA) settings for it - which is fine
for when I'm logged into my desktop, but what if I need to
go into BIOS or something like that -- it'll all be in
Danish! Yikes!

Is there ANY way to change the computer language from
Danish to English, or am I stuck with having to hunt him
down & translate everything on the screen? (I'm getting
peeved at the WinXP "Velkomme" screen. Thank god for
icons!) And no, I am NOT going to take formal classes to
learn Danish for the sake of being able to use XP. :-)

Any English-speaking help would be greatly appreciated.
(My hubby's in the Danish/int'l tech support side, looking
for help as well.)

J&J