BuddyPress.org

I have a “Profile” button on my menu and would like dropdown boxes under it to pop up allowing someone to edit their profile or upload an avatar straight from there. The problem is that the url is something like

http://realvets.com/veterans/dugfunny/profile/change-avatar/

with dugfunny being my username.

so how do i swap out the username for whatever code is needed to plug in the username of the user who is currently logged in and clicking the link?

Thanks!