The password for the file is: samfirmware.com
Start Odin and put these in the following
Forget the rest of the files. DO NOT SELECT A PIT FILE AND DO NOT TICK REPARITION.
Put your phone into download mode and connect the usb cable. When the Odin box turns yellow press flash and wait until phone reboots. The first boot will take a while... be patient.
It's 2:58am here so I'm off to bed. I don't know how to make this simpler for you.