anyhow, i'll add this:
>
>     \setupuserpagenumber[viewerprefix=titlepage]
>     \startstandardmakeup
>         The first page
>     \stopstandardmakeup
>     \setupuserpagenumber[viewerprefix=p ]
>

Thanks Hans.  That works great.  Is it possible to have ONLY the prefix
(not followed by the corresponding page number) with this implementation?
If not, is that a feature that can also be added?

Troy