>I have a VFP8 app that sit on the server and run there. It has a timer and at each n minutes, it verify for jobs to do (without any user interventions). The problem is that I have to keep a session open on the server in order to have this app run. I wonder if I can put this appication as an NT service ? And how ? Is it hard ?

Take a look at Calvin Hsia's Blog at http://weblogs.asp.net/calvin_hsia/

The vital part is not to have any user interface.

Kevin