Failed to connect to sql server

Hi folks,

I′m brazilian and new in SQL Server.

Now i′m justing tryng to create a instance to use with WSUS.
I Already created but when i try to install the WSUS and its try to connect into my new instance, i received the message:
Failed to connect to sql server ... Class not registered.
Could you help me?

Regards,

Andre de CastroCan you copy-paste the complete text of the error message which you received? What is WSUS?

Thanks
Laurentiu