WordPress MU

Hi And Have a Good Time !
I have a problem about This CMS and installing it.
This is About Wordpress Multi-user :
I do all installing steps but after them when i load index page this message comes up :

No WPMU site defined on this host. If you are the owner of this site, please check Debugging WPMU for further assistance.

And now i want to know what is this problem for and help me and explain it.
Please answer me as fast as electricity !
thanks a lot ; GoodLuck

Did you not see the previous threads on the topic of your error when you searched for your specific error? If it's that urgent as you state, that should be your first step after reviewing the readme file as well as the debugging script that it links to.

Please answer me as fast as electricity !
thanks a lot ; GoodLuck

what easy inatall for mu-wprdpress ?

Install is very very hard !!!

Actually it goes quite easy for me. The first thing I would do is check your DB, did anything get written there? Or perhaps first is your server capable of running mu? You can always try dropping all db tables (if there are any) clearing the config file back to its orgininal state, and give the info it asks and if it still won't work, i'd bet it's something with your server.

God Bless