JNLP using Tomcat Web Server

I have downloaded tomvat 5.5.17 on windows and trying to test

JNLP.

Tomcat has been installed as a service

but when I try to say:

http://localhost:8080

I get prompted with user and password screen.

I have entered user as tomcat and password tomcat,

and also tried user as admin,but the screen keeps

appearing.

What do i need to do to get this service running

[419 byte] By [bhuru_luthriaa] at [2007-10-3 4:12:41]