here's the excellently written pattern - http://www.knotions.com/issues/winter_2008/patterns/swing_swing/directions.aspx
i'm working on two 40 in circulars (knit picks zephyrs, size 8), with a needle tip on one end and a cute round end cap on the other - so it's like using two independent 40 in long needles ~grin~
makes it much easier to smooth the fabric out for admiring and trying on, now that it's not all bunched up
*yarn is Valley Yarns Colrain by Webs (www.yarn.com) - i got my 18 skein lot from a very generous raveler