When knitting the stockinette stitch how do you keep the edges from rolling under?

Hi, wfbgraham!

There is considerable information about that stitch out there on the Interent, even a couple of videos.

Please click on the following search.

Stockinette Stitch - Google Search (http://www.google.com/search?hl=en&safe=off&q=Stockinette+Stitch&btnG=Search&aq=f&oq=&aqi=g10)

Thanks!