Downloader Simple(repost)(repost)

I need a simple downloader which executes itself one week after it hits the user's disk and downloads files from a location on the web and then executes them.? Required Functionality -Download files from a URL and execute them. -Bypass firewalls. -Wait for a week before it starts downloading files. -Protection against system clock changes and sandboxes. -Silent work. -Compatibility with possible antivirus programs. -Protection against debuggers. Most of the required functionality has been implemented. I can provide you with the source code from the previous project. Features which need to be finished -Silent work - I am concerned it may trigger alerts under Vista. -Bypass firewalls - Still has problems with Comodo. -Protection against system clock changes and sandboxes - Protection against sandboxes needs to be implemented. Features which need to be implemented from scratch? -Protection against debuggers.