Ritesh,
The DTS wizard is copying (or at least trying to :angry the logins along with the tables. I would create a new DTS package and use the "Copy SQL SERVER Objects" Task. After setting the source and destination properties you get to the "Copy" tab. On this tab clear the checkbox for "Use Default Option" and then go into the Options screen and clear the database users and database permissions checkboxes. Of course you will want to take care of those settings on the destination once the transfer is done!