> Hi list,
> i've read somewhere, but i don't remember where, thet's possible to
> install,
> in the same computer, Interbase 6.0.2 and Firebird 1.5
>
> Any help appreciated.
>
> Paolo Fenelli

Just do it...
then just change the config file in firebird to make it use another port
than the default 3050.
Read the install notes - it's too simple to go into detail
Alan