excelent... thanks a lot

ok, thanks..
the issue here is that i already have a Mysql table with students information (including passwords) and i'm planning to make a PHP scripts to introduce this information in the punBB users table. So... how can i transform the actual passwords into MD5 or SHA1 passwords? there's a PHP function for that?

I will run a punBB forum in a school site where only student will can login (with a password provided by us)... the cuestion is: Can i configure punBB to use not hashed passwords? (i want to insert the password directly by the MySQl administrator)

PD: pardon my english.