Hi,Dirk
we have intalled the clients(console,data manager etc.) in win2003 server 64bit,it is working fine.and also we installed them in win7 64bit,mostly it's running well,but some of it can not work.you can try to install the console in win2008 64bit,if the console can not work properly,uninstall it and re-install it,then it might work,that is what we met before.hope it helps you.
best regards
Stephen