Presuming your client machine is a Windows PC, this might help to get access to Filemaker Db via ODBC. Your Application software must be switchable to 32 Bit (for .NET applications, look here). If 64 Bit is mandatory, no help.
Greetings from germany
ps.: i am waiting for a 64 bit odbc driver too. Please, Filemaker, don´t let us wait any more!