Yeah I think if not use this key as follows..
b04hu-65vcf-mt49c-ep302m-st17c0
1) Install ZA.
2) Enter the serial number.
3) It should say that you have 65535 days left.
4) Reboot in safe-mode.
5) Make the file zllctbl.dat in c:\windows\system32 READ-ONLY. *If you're on Vista, directory would be C:\ProgramData\Checkpoint\ZoneAlarm\zllictbl.dat *
6) Reboot normally