> The only things what changes the speed dramatically was the
> uses of a applicationsserver. We use one of the ASTA technology group
> http://www.astatech.com/index.html which is very stable and very
> flexible.

When I understood you right, your architecture looks like
Program --- ASTA-Client --- Intenet --- ASTA-Server --- Firebird-Server

But our replication-architecture looks like
FB-Server on Laptop --- IBReplicator --- Intenet --- FB-Server in company

Because IBReplicator is a third-party-product, I don't know how to
integrate ASTA in my architecture. Any ideas?

Regards

Guido