I'm thinking this interview was sometime around 2005-2008. Gillis died in 2010 but was very ill with cancer the last year so it was before that. It looks like he was a bit older from when he was last active in early 2000's.
Many thanks for this upload, I really enjoyed seeing Serena again. The first porn movie I have seen was "an adult fairy tale", with Serena and Jamie Gillis. In my opinion Serena is one of the best and hottest female porn stars ever. I don't know when this interview was made, but she looks for her age still fantastic and adorable.