Question about 2009 taxes. Put 2 dependents on my W-4, I should of put 1 but made little money. Question below?

Ok I'm going to try to make this sound as simple as I can, but I can't figure it out. I file married filing jointly with my husband, and we claim our son on our taxes. My husband has had 2 jobs this year which he claimed 0, and had 3 weeks of unemployment which they took out taxes from. I had 2 jobs this year, my first job I claimed 1 on my W-4 and on my current job I put 2 for some dumb reason. So as I got my W-2 today from my current job it has $0.00 for federal withholding. I made $4407 from that job so it is a small amount. So my question, am I going to have to pay or is this going to just make my refund smaller? Federal withholding was taken out on all of our other paychecks. Thank you to anyone that can help