Error Accessing Windows Active Directory, LDAP

I am getting the error message when try ing to access the ldap server

Error: javax.naming.NamingException: [LDAP: error code 1 - 00000000: LdapErr: DSID-0C090627, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, vece

can anybody help me how to bind to the LDAP server.

i want to find whether a particular user exists or not.

thanks in advance.

[454 byte] By [www.techtreak.coma] at [2007-11-27 9:14:51]