Subject Getting passwords

I'm a newbie to Interbase. Trying to get an app's database working on a linux server that was on a Win98 local database.

I'm just getting a connect error, which could be anything. In trying to debug this sucker, it appears that there is a non-default password set
for the user SYSDBA in the isc4.gdb file. I can't even run tests -with their database and isc4.gdb file- unless I log in with the password.

Are there any programs that (run as root) can decrypt the passwords from this file? Thanks.