SQL Server 2005 Analysis Services connection problem

I am trying to connect to an analysis services 2005 database via a pivot table in MS Excel 2003 (so through MS Query).

I select <new data source> under the "OLAP Cubes" tab, select "Microsoft OLE DB Provider for Analysis Services 9.0" in the olap provider dropdown box, and click the "Connect" button.  In the new dialog window I select the "Analysis Server" radio button, put in the name of my specific instance in the Server text box ("MyServ\MyServ") and click next.

I get a dialog box with the following error:

Errors in the OLE DB provider. Could not connect to the redirector. Ensure that the SQLBrowser service is running on the 'MyServ' server

I checked on the server and the service's status is "started".

So I tried to specify the local admin account in the username and password fields of that dialog box containing the "Server" textbox (referred to above).  Username: "MyServ\admin", Password: "***"

And I get the same error message.

I tried a username of just "admin" and got the same error message

I tried changing the string in the textbox to "MyServ" and a new dialog box pops up that says "The following system error occurred: No connection could be made because the target machine actively refused it. ."

Can someone please tell me what setting(s) on the MS Analysis Services computer need to be in place for this to work?

By the way, I am trying to follow the tutorial at http://msdn2.microsoft.com/en-US/library/ms244699(VS.80).aspx

Please ask for any clarification you need

Thanks