"due", payable, owed, expected

The bills are due to be payed this week.

> As we're speaking about terminology, there are things I don't understand 
> as english is not my native language :
> Amongst them, I don't understand the term "due". Could anyone explain me 
> this word with some other simple words ?
> 
> When I type "amadmin DailySet1 due", I get :
> Due in 8 days: somehost.foo.bar://winhost/winshare
> Overdue 1 day: otherhost://otherwinhost/winshare
> 
> I don't understand the english meaning of "due" and "overdue" ?
> 
> -- 
> Nicolas Ecarnot
> 
>