> with version of windows server 2008 is the most suitable for Firebird ?
> Windows Server 2008 standart or Windows Server 2008 web ?

This page lists the differences:
http://technet.microsoft.com/en-us/library/cc758523.aspx

Basically, it depends on your expected workload. Web edition support 2GB RAM
and dual-core CPUs. Standard supports 4GB RAM and quad-core CPUs. You could
still run a decently-sized database with 2GB RAM and dual-core CPU, but
databases love memory!

Other than those two factors, though, the other differences don't seem to be
anything that would affect Firebird.

Dean.