XP Updates without interenet connection

> 1. Is there a Microsoft program I can use to scan a XP computer that does
> not have an internet connection to see what critical Windows updates it
> needs?
>
> 2. Once I have the list of needed updates, I can install each one
> individually as I have figured out how to download all available XP

> on one CD, but that takes a lot of time. Is there a way to easily install
> all needed updates.
>
> Reason why: Many times I arrive at a users computer and it is so messed up
> with viruses or ad-ware that they cannot connect or stay connected to the
> internet to do a windows update. What I would like to do is arrive with a

> or 2, run a scan to see what windows updates they need, then install them.
>
> What is the best way to do this?
>
> Thanks......Paul
>
>