What do the hoses by the iac go to(very urgent, my only car)

[Shaggy]

There is a three way that is next to the iac that goes from the engine, than splits into two routes, one goes to the intake manifold to what looks like a sensor and the other goes to the main intake tube. How important are they. I broke the three way taking the hose off of the intake manifold to get it out of my way so i could take my iac off to clean it. Also there is all kinds of build up in the three way, cruddy oil stuff. I have pictures but im posting from my ipod so ill get them up in a little bit when i get a chance.

[SLODRIVE]

It's part of your crankcase breather/PCV system. Pretty important to keep together, so of course replace the broken tee. I wouldn't worry about the crud buildup unless it's becoming a restriction. That said, you should make sure your PCV valve is clean enough (it's the part screwed into the intake manifold) that the check ball inside it isn't stuck.

[Shaggy]

The pcv valve isnt stuck so thats good. Im gonna go get the T connecter right now. Thank u verry much, i appreciate it.