WalMart machines are on the low, low, low end of quality and will not handle constant and larger sewing loads. You will also have a difficult time getting it fixed - almost as much as the purchase price. Look for a better brand Brother at a sewing machine shop or on craigslist or in the paper. Check it out before buying so you can determine if the machine needs any fine tuning or adjustments; especially if it skips stitches. Look for that when you are buying used machines. Brother makes great machines, but don't get the WM one there.
Janome also sells great inexpensive machines and my machine was purchased at Fabric Art Shop in Lake City Florida. Google them, ask for Barbie and have her explain to you all the good stuff about Janome sewing machines. She has several to fit everyones budget. Maybe she can ship you one. Depending on how much you put into quilting, over time the better machine will be worth your investment. Buy the best machine you can afford even if it means putting it on layaway and making payments. You won't regret it at all and you can sew on the smaller one until it's paid off.
Good luck and enjoy the hunt because you will learn a lot about sewing machine features along the way.