Generally, you pick up sts around the neck and at the cuffs. It's much easier than knitting them separately and sewing them on. You could do ribbing, lace, lace rib, seed, or whatever. Check out stitch patterns at Lion brand yarn's website, knitonthenet.com or knittingpatterncentral.com. There's a video for picking up stitches here under the Advanced Techniques tab.
sue- knitting heretic