Hey guys i need your help....

I've got XP Home Edition system at home. Every time I started my computer he always told me to input the ACTIVATION CODE, and I only got 4 days to go to activate, and I don't know what happen next when 4 days is lapsed. My 10 hrs free internet connected has ended. I don't have any internet connection anymore. Is there a way to activate and register my XP activation without using internet? What should I do.