i've had the tank off mine a few times yet still forget how 2 put it back on lol, anyway i think if i remember rightly that there should be a thick hose which runs from the big outlet on the fuel tap bit at the bottom that goes to the middle of the carbs...
The little one next to that i cant quite remember and its too cold 2 go out and check(damn snow!!!) hehe seriously though i know it has a thin hose connected 2 it.
Theres another little nipple type bit right up inside the tank that u can see when u turn it upside down i think it's the breather for if you overfill the tank.
And theres the wires to the fuel tap but they should be fairly obvious where they go.
Sorry if its a bit long winded explanation but hope it helps oh and good luck with getting it back on...
Btw what colour is your bike????