BACKUP YOUR DATABASE FIRST!!!
If you need to be PCI compliant, they you probably don't want to do this. But if you're useing ZC in a testing environment, then there's no reason that you can't use the same password over and over again.
I haven't found the trick to disabling the forced password reset alltoghther, but there is a work around using phpmyadmin to change the password back to what it was. Change your password when it asks you to, then In phpmyadmin, under the admin table, edit your user name, and blank out the prev_pass1, prev_pass2 and prev_pass3.
Then change your password back to what it was.
Kind of a pain, but at least it works.