How do I repair the rear hatch locking mechanism on my 1997 Honda Passport?

How do I repair the rear hatch locking mechanism on my 1997 Honda Passport?
I backed into another car and now my rear hatch on my 97 Passport won't open. The spare wheel can still swing aside, and the interior hatch-open button still works - but the rear hatch window won't pop open and my key can't pop open the rear hatch window or door either. I can't find anywhere where I can unscrew or unbolt the locking mechanism or door handle to examine it. How can I figure out how to access and repair the broken part? I also have looked online at several Honda parts websites and cannot find a replacement locking part anywhere. Help! Thanks!