urgent help needed!

I dowloaded Resin2.0 and installed on my pc.
Now I am trying to configure it with IIS.
first I evaluate Resin using resin's included http server, everything works well.
Then I run
esin2.0.2 insetup.exe;
then configuring resin.conf: change the app-dir attribute from 'doc' to 'c:inetpubwwwroot'
run httpd.exe to start servlet runner.
create my servlet class file :c:inetpubwwwrootmyServlet.class
I browse:http://localhost/myServlet
but I get message:"page can not be found".
Where am I wrong?