Add/Hide Custom Fields to User Profiles?

Hey guys,

I’m looking for an efficient way to add custom fields to user-profiles in WordPress. For instance I’d love to add a field called “Address” to the user profiles that I can work with later on.

E.g. By default there is a way to get the user display_name like this
$user_info = get_userdata(1); $user_info->display_name;

However once I have an additional field for the address in my profiles, i’d also like to be able to call $user_info->address; or something similar to get this information on a small profile page.

Have you any recommendations for a good plugin or a way to do this by myself.

Finally I’d also like to remove already existing fields like “Jabber, Google Talk” etc. from the profile page.

Thank you in advance,
Matt

UPDATE: Don’t get me wrong: I don’t want to add fields to the “signup/register” page but only to the profile pages itself.