Thanks for the comments.The curtains were a breeze to model. Just a question of drawing a few lines, and telling Amapi to connect the dots. With version 5, i was even able to edit the underlying splines to model both curtains from the same set of curves. I've been using Amapi for only a few weeks, now, but I'm tackling stuff that I wouldn't have before. If you can get the coverdisk, version 4, do it (PC Format, issue 114). The'll even sell you the manual for $29, and give you a break on version 5.