Help Required: Simple tell a friend form on BuddyPress Sidebar

Hi Folks,

I'm trying to implement a simple tell-a-friend form on my sidebar on http://www.eqlife.co.uk - a social network for equestrian enthusiasts built on WP/BP.

Basically, I want the form to include the following input fields:

- Your Email (With value set to the users email if logged in)
- Friends Email
- Submit

Upon form submission, I want a confirmation alert box to pop up.

Any help on this would be HUGELY appreciated! As would any feedback on the EQ Life site which launched yesterday!

Cheers!