How to Start the Visual Administrator

http://help.sap.com/saphelp_nw70/helpdata/en/23/fa1f1e5f6841cf92c64dc19d79f290/content.htm

Procedure
...
       1.      Start the tool:
¡        For an ABAP + J2EE system (J2EE Add-In):
§         On Windows:
Run \usr\sap\<SAPSID>\DVEBMGS<xx>\j2ee\admin\go.bat.
§         On UNIX:
Run /usr/sap/<SAPSID>/DVEBMGS<xx>/j2ee/admin/go.
¡        For a J2EE system:
§         On Windows:
Run \usr\sap\<SAPSID>\JC<xx>\j2ee\admin\go.bat.
§         On UNIX:
Run /usr/sap/<SAPSID>/JC<xx>/j2ee/admin/go.
The SAP J2EE Engine – Administration screen with the Connect to SAP J2EE Engine dialog box appears.
       2.      To connect, do the following:
Connecting to the SAP J2EE Engine

J2EE type
How to connect
J2EE system
Choose Connect to use the Default login and enter the password for the Administrator user of the SAP J2EE engine.
J2EE Add-In
You cannot use the Default login. Instead do the following:
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       1.      Choose New.
       2.      Enter a display name and choose Direct Connection to a dispatcher Node.
       3.      Choose Next.
       4.      Enter at least the following:
¡        User Name: J2EE_ADMIN
¡        Host: <host_name> of the J2EE engine
¡        Port: <P4_Port>
The following convention applies for the port: 5<J2EEinstance_number>04. For example, if your J2EE instance number is 15, the P4port is 51504.
       5.      Choose Save and connect with your new login account by choosing Connect.
       6.      Enter the password for the J2EE_ADMIN user and choose Connect.