custom user register page

hi, i have a custom register form on my wordpress theme. it has extra custom fields such as gender some inputs. can i collect and save the databese for use it later. I mean for example, gender, i’m asking the new user their gender and im planning to use persentage of it. %25male %50 female %25 other. is it possible to that with your plagin. all i need is the custom database to call the info. thanks