The bloke who makes New Star Soccer has released a Euro 2004 management game. It's a decent little game but it is quite similar to the World Cup Manager game he released two years ago. Heres a link to download it http://download.com.com/3000-7475-10290598.html?tag=list . You can play the group games but you'll have to pay $5 if you want to go further.

Good fun little game. Worth it, it's cheap.