How do I find other chatters not on my contact list for private im?

here's 2 ways ,,, one you can go to yahoo home page and on the left of page you will see a col um of choices , find "more yahoo services" and click , when window opens go to bottom right corner of that window and hit "all yahoo services ", then find M 's and choose" member directory ", suppose you can go in a chat room also which if you don't know can be accessed from yahoo home or your messenger