Steps for Configuration Manager:
Make Browser service automatic from Manual in SQL Server 2005 services
Go to Network Configuration in Configuration Manager
Enable TCP/IP
Enable Named Pipes
Surface Area Configuration tool steps:
Go to Surface Area configuration for services and Connection
In Database Engine click on Remote Connection
In there change to Local and Remote
And choose both TCP/IP and Named Pipes it is the last option.
Then in Managment Studio go to view at the top click on Register server, SQL Server splits your object browser.
Right click on Database engine and then new then click on server registration and you said you have Windows authentication it is the default add the connection info and it will work.
原帖：http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1869763&SiteID=1