Query Analyzer to SQL Server 2005

For testing purposes, I installed SQL Server 2005 (September CTP Developer edition) on a Windows XP Pro machine whoch does not belong to a domain. I have a Windows 2000 Advanced Server ruiing SQL Server 2000(SP4) and used Query Analyzer to connect to SQL Server 2005 in the XP machine. I am encountering a [DBNETLIB] General network error. I already used an IP address instead of the server name, I can PING the IP address of the SQL Server 2005 machine, chanegd the authentication mechanism to SQL authentication in SQL Server 2005 but still come up with an error. If I use SQL Management Studio to connect to the SQL Server 2000 machine, everything works perfectly fine. Is there anything I am missing?
[704 byte] By [bass_player] at [2007-12-17]
# 1
SQL Server 2000 Query Analyzer is not forward compatible and does not understand the packet format that SQL Server 2005 uses. SQL Server 2005 Managment Studio does understand the SQL Server 2000 protocol, so it is backwards compatible.
StevenTwitchell at 2007-9-8 > top of Msdn Tech,SQL Server,SQL Server Tools General...
# 2

Query Analyzer from SQL Server 2000 to a SQL Server 2005 machine works fine for me. Check and see what client connection you are using (I use TCP/IP).

brucef at 2007-9-8 > top of Msdn Tech,SQL Server,SQL Server Tools General...

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