O.o?
Sneaky sneaky.
Hmm, I do wonder if this could work?
Go to the Us client, rightclick and go to properties.
Change the target so it is called "CohUpdater.eu.exe"
Hope this will work, only thing I can think about.
Or, this linky http://boards.cityofheroes.com/showthread.php?t=165253.
Did a little search on how to install the eu client.
Lady Arete on Unionhandbook
My Excel Badge tool
Thanks a bunch, LA 
After having some trouble with my computer I had to ship the processor off for a couple days due to my OS crashing and my programs etc have been lost.
I've downloaded the EU client via the NCsoft site, but for some reason I only have the US Client available :S
Help?