connections to my SQL server fails.

I have a win2k server with Sql server 2000 with service pack 3a.
My sqlserver was working good until I done two thing:
1- I have been set the "Additional restrictions for anonymous connection" to "Do not allow enumeration of SAM accounts and shares"
2- I have been installed the microsoft security patch <a href="http://support.microsoft.com/?kbid=815495" target="_blank">Cumulative Security Patch for SQL Server</a>

I done those in same time.After that when I want to connect to my sql server remotely(by

Enterpise Manager or Connection string) the connection failis and tells me:
SQL Server does not exixt or access denied.

(comment: I have not this problem when I use Enterpise Manager form local sql server)
As I said I am using win 2K and Sqlserver 2000 so I can not use this <a href="http://support.microsoft.com/default.aspx?kbid=823492" target="_blank">823492</a>

Please Help me...