Umm maybe he registered his account on the US site by accident, pretty easy thing to do really. 
I'm sorry I don't recall any way of transferring an account from one district to another, you could try contacting customer support and asking them.
ok...u think maybe he should make a nother two week account on the europe servers? is that possible with the same computer?
Shouldn't be a problem , there's no restriction on how many trials someone can have. 
Help
I told a friend who didnt have coh before, about the new mac version.So he got the mac client and the 2 week trial, but he landed on the US servers even though he is located in europe and downloaded it from the european site!Now there is no way for us to meet.
Are Mac users automatically transferred to the US servers.
Can I get access to the american servers somehow or the other way round???
HELP!