Hi, i'm a newbie

I'm doing the second tuturial of Maya 8.0 unlimited where I have to make a helmet. All went well till I had to fill the gap between the back and front of the helmet... I know how to connect the two part together, but the program is connecting it the wrong way (in a twist)!



The red lines show the way it should be connected. The black lines show how the are connected now...



I think its a setting, but I think I've tried everything...



Anyone has the solution to this problem??

Thanks in advance