JSP /LDAP login examples - Help Please

Hi ALL,

I am doing a web portal project which requires user login, users'
username/password stored in one LDAP server.

The OS is UNIX
The web server: Sun One Web Server 6.1
The LDAP server: Sun One Directory Server 5.2

The requirement is, after user login, the system will fetch ALL user
groups this user belongs to form ACL file and display to the user ( I
am actually using this information to dynamic generate "Home.jsp" page
for individual user)

I am using JSP to build up the web portal. I am new to JSP (has plenty
of experience in ASP), can program in Java but don't know JavaBean,
Servelet...

Could any body give me example or ideas what/where should I start?

Thank you very much for your help! Thanks a lot!

Kind Regards,

Bob