I have been trying to connect netbean service for database explorer with Microsoft SQL Server JDBC Driver 3.0 but unsuccessful always.The zipped jdbc driver has two jars I tested it with sqljdbc but it says that is is not compatible with java 1.7 so I tried it with sqljdbc4 and now it shows following error:

I have enable TCP/IP connection to the server.
What is the right way to connect netbean service with sql server 2008?
I got the solution to this problem actuall you should use the port 57634 for TCP/IP connections. Well you can change the port if you want by going to :
Configuration Manager -> Protocols for SQL SQLEXPRESS > Properties of TCP/IP. In the IP Addresses tab, set the TCPPort in section IPAll to 1433.