Add user-defined module into Database Engine to pre-processing T-SQL queries

I want to give transparently access for applications to distributed data on 2 database servers.

I write a module to translate 1 sql query into another query. When users send sql queries to DB-Engine, then DB-Engine will firstly forward these queries to my defined-module before processing sql syntax.

How can I integrate my-defined module to DB-Engine of SQL Server?