just use your ichat a/v software to use vrs like hovrs check https://secure.hovrs.com/VRS_SSL/hovrs.aspx
for widget for dashboard and information/direction on how to use hovrs with your iMac with built-in isight (that's what it's called; Apple - iMac - iSight )
bro told me you can use Sight Speed to use call to any vp.
How?? I have try this before but seem not working maybe I do wrong..
I dunno about Sight Speed. haha. better ask my bro
How Do I contact VP from Sight Speed?