By the way, be careful of the quality of the thread. I used to work at a Viking store and they told us to teach and stress that a certain brand of thread would "melt" in the machine so not to use it.
Usually if it is a 100% cotton thread, that is not coated ("mercerized") in some way, it is a good thread to use.
On another question here, someone mentioned that Connecting Threads (www.connectingthreads.com) was having a sale on thread and that looks like its good thread.
HTH,
Marcia