> I've tried to use the classic server version, but all the program
> can't be work (including IBExpert). Can you tell me how to make the
> program to be work? Or it must be re-compiled to configure to classic
> server?

They are interchangable, except Classic (on Windows) does not allow a
local connection string. You must use a TCP loopback instead. The best
way to configure it is to use an alias for the file path (add a line
to aliases.conf) eg

MyDB = c:\data\mydb.fdb

Then change your client connection string to

serverhostname:MyDB

where serverhostname is the hostname or IP address (or localhost if it
is this machine).

Even for superserver, local connection only works for a single
connection at a time, where as the TCP connection allows as many
connections as the implementation (and hardware) can manage.

Adam