multiple deleting and updating raw mysql via php

Hi all, I meet a problem when I want to deleting a multiple row, I have a table that contain columns UserID, name, company name, and bill. UserID is uniq. perhaps, some of UserID, say it five UserID I have to delete, how to delete all raw that contain that UserID ? and if I want to update bill of a users (multiple user) that data of users taking from a file ( so the file contain user UserId and bill), how to make it ? Thanks, Aji __________________________________ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail