> Is there any restriction or some different options to use
> Firebird/Jaybird in win98?

In theory - no.

> I am having this why trying to get a connection from the pool, would
> that be something about TCP/IP?
>
>
> Resource Exception. No message for code 335544352 found.
> null
> null
> null

You have some problem with the installation. Driver cannot find its
error messages that should be in the same .jar file.

Message for this error is:

335544352=no permission for {0} access to {1} {2}

Roman