Socket error in Netbeans - not Eclipse though !

[rob.morning]

I have some code to connect to a server via a socket .. The connection line is shown below ..

Socket s = new Socket("myMailServer", 25);

which immediately throws

java.net.SocketException: Permission denied: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at java.net.Socket.connect(Socket.java:478)
at java.net.Socket.<init>(Socket.java:375)
at java.net.Socket.<init>(Socket.java:189)
at com.rbm.SMTPTest.sendMail(SMTPTest.java:43)
at com.rbm.SMTPTest.main(SMTPTest.java:2


It's running on Java 6 .. Windows 7 .. Trying to connect to MS Exchange ..

Strange thing is when I run EXACTLY the same code thru Eclipse on the same machine it works fine .. It runs as an application (not an applet ) so no SecurityManager or anything like that involved .. Both apps are executed under administrator authorisation .. Can anyone help ?? Where can I look ?