Developer Edition Installation - Named Instance can't be opened

I am trying to install the Developer's Edition of SQL SERVER and I would lik
e to create a named instance.
The installation appears to work OK but I can't register the NAMED instance
in Enterprise Manager. The LOCAL instance is working OK and is registered in
Enterprise Manager.
Each time I try to register the NAMED instance I get the error SQL SERVER do
es not exist or access denied. ConnectionOpen(Connect()).
I see the instance existing in my SQL SERVER installation directory.
I am installing this in Windows XP
Any help is appreciated.
jimThis may be basic but are you trying to register it using the following
name:
<machinename\instancename>.
If you are and it is still failing. Look at the SQL Server errorlog form
that instance and verify that it is listening on shared memory, TCP/IP and
named pipes. If you are trying to register it on the server itself shared
memory is used by default. Trying regiistering it uisng the IP address and
port number that SQL Server is listening on.
Rand
This posting is provided "as is" with no warranties and confers no rights.|||I corrected the problem. I needed to clear my registry entries for a prior i
nstallation of INSTANCE.
thanks for your help