Password encryption and password retrieval

Hi evryone, I want to implement a site where i would like to encrypt the password of the users and store it into mysql database. My question is that , In case if the user has forgotten the password how can he retrieve the password(which is already encrypted and stored...the user should be able to get the decrypted password). Also which encryption method would you recommend. ie. md5,crypt, etc.... Thanx, ..Deeps.. ________________________________________________________________________ Yahoo! India Matrimony: Find your life partner online Go to: http://yahoo.shaadi.com/india-matrimony