It would be a constantly running program, it would do it's thing at the specified times and thats it. Ether it would simply be run as an exe, or it would be run as the script using the autohotkey program which is as simple as setting ahk files to run with it. or dragging it onto the autohotkey.exe, but then it couldn't be set to autorun[/edit]
If you understand C++ and have a bit of time to do some reading, you could probably do it yourself. http://www.autohotkey.com/
is what I'd using, it's pretty simple in fact the only other coding I've ever done is a bit of HTML and a bit of maki (winamp 3 skins, looong time ago), and mostly I constantly reference the manuals and example scripts, it's almost cut and paste.