Standart registration form modifications

Hi

I want to append few fields to my registration form. I am using a profile module.
Question 1.: I will use email address as username. How can I append a email confirmation field, where user should retype his email 2nd time?
Question 2.: How can I create a country list in registration form usign database table, where countries are stored? (I created addition table `countries`, with fields `id` and `country_name`)

Thanks

_{Edited by WorldFallz - moved to appropriate forum.}