Welcome aboard. I expect the show you're thinking of is High School Reunion which airs on TVLand (originally on the WB).http://www.tvland.com/prime/shows/highschoolreunion/season3/
It's filmed in Hawaii.
http://highschoolreunion.tvland.com/
Someone on these forums may be able to help you (just guessing).
http://forums.tvland.com/tvln/board?board.id=2111
For more links go to
http://www.sirlinksalot.net/highschoolreunion.html
Or
http://www.realitytvworld.com/highschoolreunion/
Good luck with your decorating.