Thanks so much for these speedy replies!
Ok...a couple of questions. justwannaquilt - you spoke of an overlock stitch. Is that just on a serger (I don't have one) or can my Janome MC3000 do this? I've never learned much about the machine other than simple sewing.
Also you and clem55 mentioned elastic thread on the bobbin. I'm not familiar with that...does it gather as you sew the stitch and should that be two basting stitches side by side like I would use if I were pulling threads?