How Do You Balance Complex Redox Reactions?

[erjkism]

Balancing a Redox Reaction.. urgent

I have an assingment that is due tomorrow for my college chemistry class and i am stuck on the last problem. I need to balance the following redox reaction, but everytime i try it doesn't balance...

H2O +I2 + OCl- ? IO3- + Cl- + H3O

when i split it up into the half reactions i get
I2 + 6H20 ? 2IO3- + 10e- + 12H+
OCl- + 2e- + 2H+ ? Cl- + H2O
which adds up to be this

5OCl- + I2 + 2H+ + $H2O ? 2Cl- + 2IO3 + 12H+

i don't get why it doesn't work. can someone show me what to do?? i have already searched the internet for tutorials, and i think i am doing everything correct.

 

[erjkism]

OH yea the question mark (?) is supposed to be an arrow