Here’s how to change the default link when you go to Profile:
Change the default tab opened when looking at a user’s profile (default is activity):
‘define( ‘BP_DEFAULT_COMPONENT’, ‘profile’ );’ (Note: if you change the URL slug of xprofile, say, ‘define ( ‘BP_XPROFILE_SLUG’, ‘info’ );’, you would have to change it here accordingly, ‘define( ‘BP_DEFAULT_COMPONENT’, ‘info’ );’ otherwise, link to the profile page would always jump to homepage.)
This was taken from the BP Codex here: http://codex.buddypress.org/extending-buddypress/changing-internal-configuration-settings/
I’m not sure of your second question. You may want to create a separate forum question for that one, or wait for someone smarter than me to come along.
