user profile

Hi, I don't always want users to fill in "Occupation" so how do I change it? Also, I wonder if there's a custom registration field that allows for conditional input. Let's say Females will have a different set of questions that Males. And it would be nice to allow for different profile fields...

I noticed there is a lot of wasted space on the page, because if someone writes a one-liner, the signature and controls will always sit flush with the bottom of the user profile box. Is it possible to have the text positioned higher, while allowing the user profile box to determine the...