yaaahoooo
guess what i found out?
do this:
edit the ini file to have all the servers you want
now start the server from command line :
server_windows -adminpw=newpw (<- insert whatever you like)
now there iss a admin user , with the pw above who is server admin on all servers
BUT this dont fixes the webadmin problem , this seems to be a bug
but with the admin you can admin all servers from the client