VFP 6

I want to be able to control who can and who can't use an application.

Here's what I'd like to do.

1) Add a table in my allocated space on the net
2) When my application is installed check if the serial number is in the DBF    
   that was put on the web.
3) If serial number is there add the installation date in the table
4) is serial number is not there stop the application

I'll probably do more things than what I said but the thing is that I'd like to have the basic idea of how to process with this.

Is it possible to do it with what just the basic stuff that comes with VFP or do I have to get other tools (like West Wind or others).