IPC or remote call to a desktop application

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.NET

SQL-Server

IPC

Hi,
I need suggestion regarding interprocess communication for one of my project. Let me brief my problem first.
I created a desktop application using .Net2.0 framework. The application internally uses some third party dll as well. It basically gets data feed from external server and stores on a SQL server database. Now I want to expose this application's functionality to some client program. the client program should be ideally a web based program or some other desktop client. the client should trigger different actions that the desktop application is doing by button press or so.
please suggest me some architecture to achieve this.

thanks in advance