SQL Browser Services use

I have SQL Server 2000 and SQLServer 2005 on my machine. The SQL Server 2005 has a named instance. From the server in Management Studio, I can load, and interact with both instances. 

When I try to connect to the named instance from a different Management Studio on a different machine(i.e connect remotely), I'm not able to connect unless I specify the port number. I have the SQL Browser services running on my machine.

The documentation for SQL Browser Services says if the named instance is listening on a port that is not the default port, and with SQL Browser services running , the SQL brwoser should be able to identify the port the instance is listening to.

Is this right or have I mistaken ?

Thanks