READ THE ERRATA BEFOREHAND!!
Pattern includes written instructions as well as a chart, each can be used separately, but together they usually clear up misunderstandings.

The pattern is available here.

ERRATA:
round 23 should say:(p6, MB, p7, k1tbl) repeat to last st., p1
Pattern PDF fixed on June 23rd 2009

ERRATA2:
The S/M size does not have the right amount of sts to knit a round number of pattern repeats. A quick fix is to CO 80 sts instead of 88, but this will mean a circumference of 34cm instead of 37cm unstretched.