Hi. I have a 3 or 4 year old standard Brother sewing machine that I bought at Walmart. I use it to do my piecing....but then I hand quilt after that. I have heard people talking about quilting on their sewing machines, so I did some research, and it seems that there is some kind of special foot that would allow me to do that. However....I have no clue what it's called or where to find one. Any ideas?