I have a Virtual Dedicated Server, how can I run an application periodically (ie: every Monday - 19:00). I mean, the application starts automatically at a given time.
Is there any way to do it with Java, Ajax, PHP? (sorry, I'm noob)
You can create scheduled tasks in windows and cron jobs in linux/*nix like systems. If you can run programs on the server and want to use java you can use timers to schedule your task - here is a simple example.