Try asking this same question in a more newbie friendly environment, such as www.linuxquestions.org.
The folk on slashdot are generally very clued up, but if this gets onto the main
I know that there are programs that do exactly what you need because I've seen them, but I don't know them by name, nor well enough to make a recommendation.
Anyway, just a suggestion. I hope you get your question answered, but I do feel that
All the best!
To do nothing is to be nothing.