Theming the registration form

Hello! I would like to ask for advice on how to customize the registration form in D7.

The situation is this: I installed the profile2 module, created additional fields, but I just can't figure out how to order them. For example, the path to the registration form is mysite/client/register with a template named page--client-register.tpl.php, but that seems to be from D6.

In general, there must be a solution; maybe you can suggest where to look.

I could use the contemplate module, but it doesn't suit me!

Thank you!!!