The US and EU clients are the same, the account system all got merged a while back and any duplicate named accounts had an "EU" prefix added so if you can't log in, try adding "EU" to the front of your login name.
Octavian Vanguard
@ohmsEU and @ohms 2
Badging character: Bimble on the Union server, Badgehunter.com and City Info Tracker.
Ah damn I was annoyed with myself for that. If they merged why does the NC Launcher have 2 different download installs for EU and US? :/ but oh well, good to know it wasn't all in vain! Thank you kindly. 
Good news about this is you now have access to (can choose between) 15 servers, 16 if you ever go VIP.
Awesome news yeah Can't wait to get home and jump in, it's being soooo long since I jammed.
Hello there.
I've had a long break from CoH, since Issue 9 I think
Recently downloaded it again, but accidentally downloaded the US client and patches. but I only realized my account is on EU after that
Unfortunately my internet is 3G at the moment, and I am pretty much at the end of my data, have enough for play, but not a whole redownload.
Is there anyway to use the US client on EU? Any help would be fantastic.