Weblogic8.1 and Eclipse3.0 integration

[841843]

Hi All ,
I am trying to integrate weblogic8.1 with eclipse3.0 .
I am using jdk1.4.2.
When i start the weblogic from within the eclipse i get a error like this

Oct 5, 2006 3:36:11 PM java.util.jar.Attributes read
WARNING: Duplicate name in Manifest: Depends-On
java.lang.SecurityException: Unable to locate a login configuration
at com.sun.security.auth.login.ConfigFile.<init>(ConfigFile.java:97)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
at java.lang.Class.newInstance0(Class.java:308)
at java.lang.Class.newInstance(Class.java:261)
at javax.security.auth.login.Configuration$3.run(Configuration.java:221)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.login.Configuration.getConfiguration(Configuration.java:215)
at javax.security.auth.login.LoginContext$1.run(LoginContext.java:170)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.login.LoginContext.init(LoginContext.java:167)
at javax.security.auth.login.LoginContext.<init>(LoginContext.java:404)
at weblogic.security.internal.ServerAuthenticate.main(ServerAuthenticate.java:78)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:211)
at weblogic.Server.main(Server.java:35)
Caused by: java.io.IOException: Unable to locate a login configuration
at com.sun.security.auth.login.ConfigFile.init(ConfigFile.java:206)
at com.sun.security.auth.login.ConfigFile.<init>(ConfigFile.java:95)
... 16 more

Any ideas highly appreciated.