You can download ZiPhone here.
You can get the files for a 1.1.2 jailbreak here.You will need to first jailbreak 1.1.1 then install oktoprep and then you can get 1.1.2 and jailbreak it. You will also need to install java for this to work.
To jaibreak it after you have done everything above open the extracted file and click windows.bat. Now just check off install SSH and click jailbreak.
You Probably didn't Brick it.
1)Turn off your iPod/iPhone (if you cannot do it normally hold power and menu until the screen turns blank.)
2)Plug your iPod/iPhone into iTunes (while inserting the USB cable hold menu)
Now you should be able to restore through iTunes.