how to include a namespace in .cs file to a .asmx

[BrixSat]

I create a new wb project (webservice), then i add three exsisting files written in c#. then i add a asmx file and now i want to call classes and functions in my asmx file from the .cs files which have a namespace.<BR>how do i include this namespace in asmx file?<BR>thanks for your answer