Hook the wpadminbar and the profile

I would like to know if there is a function I can add to my functions.php, which will:

1) Tell the admin bar to use my CSS instead of the default (I want to override the fixed background-position, and neither position:relative nor position:inherit is working.)

2) Use my html on profile page, because I don’t want the grey left sidebar, and I don’t want the “Personal Options”, since my users don’t need a color scheme for their one page profile. So I think I need a function to tell it to read a new file called profile.php in my theme?

Thanks.