Don't cut them, they'll be too short for anything!!!! You can use them just like straight needles; cast on like you do for a straight needle, and knit into the stitches. Then turn at the end of the row and knit back across them. They're great for large projects like blankets and shawls because they hold 2-4 times as many sts as straights. And you can knit things in the round with them - sweaters, hats, mittens.
sue- knitting heretic