Alias not working on some machines

SQL 2005 SP2 on Windows Server 2003 SP2
SQL 2000 SP4 on Windows Server 2003 SP2, with SQL 2005 Native Client installed
Some of the servers running SQL 2000 are using a 64-bit OS, some are usiing
32-bit. All use 32-bit SQL 2000.
Trying to create an Alias on a SQL 2000 machine to point to a named instance
on a SQL 2005 machine through TCP/IP (for use in replication).
When the alias is created on those SQL 2000 servers running a 32-bit OS, it
works.
When the alias is created on those SQL 2000 servers running a 64-bit OS, it
doesn't.
Instead, when I try to test using isql, I get:
DB-Library: Unable to connect: SQL Server is unavailable or does not exist.
Una
ble to connect: SQL Server does not exist or network access denied.
Net-Library error 53: ConnectionOpen (Connect()).
Any ideas?
Thanks,
Tim C
There seems to be a subtle incompatibility issue. We have started moving our
SQL 2000 servers to 32-bit OS's on virtual machines to avoid the issue.
But if anyone knows of a simpler fix we could implement, I would love to
hear it.
Thanks,
Tim C
"Tim C" wrote:

> SQL 2005 SP2 on Windows Server 2003 SP2
> SQL 2000 SP4 on Windows Server 2003 SP2, with SQL 2005 Native Client installed
> Some of the servers running SQL 2000 are using a 64-bit OS, some are usiing
> 32-bit. All use 32-bit SQL 2000.
> Trying to create an Alias on a SQL 2000 machine to point to a named instance
> on a SQL 2005 machine through TCP/IP (for use in replication).
> When the alias is created on those SQL 2000 servers running a 32-bit OS, it
> works.
> When the alias is created on those SQL 2000 servers running a 64-bit OS, it
> doesn't.
> Instead, when I try to test using isql, I get:
> DB-Library: Unable to connect: SQL Server is unavailable or does not exist.
> Una
> ble to connect: SQL Server does not exist or network access denied.
> Net-Library error 53: ConnectionOpen (Connect()).
> Any ideas?
> Thanks,
> Tim C