Many thanks for the support so far given.
I have one last task to achive. I created an english site (domian.de) as main site in mmultisite and then created site2 being in German (domian.de/de)I need to know if there is an easy way to get the 2md site to open as defult page when typing in domian.de.
Summery: point domian.de to domain.de/de.
Any advise on this one would be greatly appreciated.