In Keyboard Map switch to "View keys" on the left. Then go look for Move Home. Assign a free key to it.
If you want to return keymap to default, go find the Settings folder in your game installment - Should be somewhere like c:\programs\HTC\Aces High II\Settings. Its a GOOD thing to back that folder up every once in a while, since it contains all customized settings. If you ever have to reinstall game you can copy paste it back in and have all your old settings back in an instant. Anyway, to return Keymap to default, just delete the .kmp files (theres 6 of them) in the Settings folder.