"They have the best buttons." In cloth-loving circles, its like a mantra. To some, this may seem like no big deal. But no one wants to take the time to make something by hand only to spoil it by attaching any old buttons. Still, Dell's not merely about buttons. Whether you're planning to sew your own wedding dress or reupholster the armchairs Great-Grandmother Beulah left you, Dell's staffers can help. They seem to enjoy a project as much as the person who is doing the sewing and are happy to spend as much time as it takes to pick out the right pattern, the perfect fabric, and all those incidentals like turquoise hem tape and shoulder pads. Bolts of fabric from all over the world fill the shop with textures and colors that no chain store can match, from batik-printed Balinese cotton to handwoven India silk taffeta to a smart little collection of fake fur. If you don't know how to sew, an excursion to Dell will make you want to learn.