Thanks everyone for your replies! A lady in my quilters guild let me use an older machine of her's so I could practice FMQ on it. I took it by the shop where she has it serviced and the foot I was told I needed was $38.99! I couldn't afford to pay that even if I actually owned the machine! She did show me how to raise the shank so the foot isn't touching the fabric though, so maybe I can practice a bit using the regular foot?
Donna