Oh so you want a free client that access the server, that's different. Just write your own, not a big thing to do -- well I guess it could be if you don't have any experience in SQL query language or wrinting programs that access databases.
Enterprise manager is actually very cool. I have used Toad before for Oracle and they have a free beta version for SQL Server (http://www.toadsoft.com/toadsqlserver/toad_sqlserver_beta.htm) so if you're dying to use something else, I'd give that a shot based on past experience with their tools. I haven't used this one though so I really don't know how it compares to Enterprise manager or SQL Server Management Studio as it's now called.