Hello Victoria,
First of all make sure you have put the needle in the correct way round, make sure you have the presser foot up when you thread it so the thread goes inbetween the tensions discs, top tension round about number 5, if it still misses stitches after putting a new needle in and you are not sewing on a silky or fabric that creates static then the chances are the machine will need retiming, you can do this with patience or take it to a shop, any further problems e-mail me drivewithken@blueyonder.co.uk
Ken
drivewithken@blueyonder.co.uk, October 2007