Hi Mary-Ann. Welcome to the board.
If I'm reading your post correctly, then I think you are looking for a snap-on adaptor if your feet are snap-on feet. You can find one here:
http://www.shop.sew-classic.com/Low-...-SCF5011-1.htm
Any low shank feet should fit your machine. Good luck on your first quilt. Are you planning to free motion quilt it on your machine? If so (and if you don't already have one), you can also get a free motion foot from that same site. There are several versions offered. Look for ones labeled "darning" or "free motion embroidery."
You should find a wealth of information on the main board as you start your project and lots of people willing to help you.