I know i shouldnt ask this here but

I know i shouldnt ask this here but, when i download DMZ, it says the setup expired, what do i do.

Ask in their forums for help. That is what you should have done.

But I will help you here anyways. If you are using any windows version get into the clock setup. Do this by double clicking the clock in the corner. Set the date back a few years, and it shoud install just fine.