Tax question....HELP!!!?

i filled out my W4 form for my employer and i entered 1 for myself, i am married, and 1 for each of my dependents ( i have four dependents). Now, there are no federal taxes being taken out of my check and i want to pay taxes so i will not owe the IRS any money at the end of the year how should i fill out the W4 (should i file married seperately, jointly, or not claim all dependents). i'm thinking i don't have any federal taxes being taken out because i put my status as "married filing jointly" with 4 dependents (maybe too many dependents)....sorry i'm confused about this.