Unable to add PO system in NWDS

Hi All,

I tried to add the SAP PO system to NWDS using Preferences-SAP AS Java also from Management Console ,it asked me for OS logon SAP JEE Host.

Here I tried both Administrator as well as OS user id,but its not accepting.Before doing that I cleared all the passwords from Preferences-Security Storage.

I checked both Administrator as well as OS user ids are not changed.

Can you please guide me?

Thanks in advance