ConnectionOpen(Connect()) in SQL server 2000

hi,
i am new to SQL Server 2000 n trying to set up a Server in Windows 200
pro,
but whenever i try to Register the server it fails n gives the below
error,
ConnectionOpen(Connect()) faIled.
plz if some one can rectify this issue,
thanks in advance,
mandeepFirstly check if your SQL Server services are running; If yes then
proceed
Start-->programs --> Microsoft SQL Server --> Client Network Utility
Check to see if TCP/IP and NamedPipes are enabled only check if Shared
Memory is checked, if its not checked, check it