>hello, thankyou very much for reply. therefore, for client application we need timer.according to your suggestion small application can run on server which i am getting more interested in .Is this thing possible in vfp? if yes, could you please explain how ?
>thanks very much again for your help
>john still

I don't think that this is the best way but you may have application which will scan some table checking some total credit values and when limit is over it will e.g. send email to all/some users of the system. There is an example in UT Files how to send emails from VFP app.