List user data

Hi. i use the pie-register plugin and i love it. There is one question i liked to ask.
I made a registration form with some custom fields like address, zipcode, city, male/female. Is it possible to show the added fields with a function?

I want to show a list of users (name, address, zipcode, city and m/f) on a WordPress page.
Something like this

<?php
show_users ()
{
   echo 'name,address,zipcode, city,sex';
}
?>

I looked everywhere in my SQL database but i cannot find the fields..
I this possible?
THX Freek

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