Wow - good find if that is really it! If not, seems like the page still contains valid info - though last updated in 2005!
The only further update I'd offer is that you might search for "flickering" LEDs vs "flashing". Pretty easy to get true fire-like flickering LEDs in a rainbow of colors now. A mix of yellow, orange and red should give a nice fire like effect! ...or go blue and violet flickering for a spooky effect!