On Sat, Jan 23, 2010 at 4:57 PM, Wolfgang Schuster <
schuster.wolfgang@googlemail.com> wrote:

> Am 23.01.10 15:46, schrieb Marius:
>
>  Hello all,
>>
>> how to set times new roman as \rm, arial as \ss and courier as \tt?
>>
>
> When you need only the Times/Arial/Courier look you can use:
>
> \usetypescript[postscript]
> \setupbodyfont[postscript]


Thank you for the hint.
The solution to my question is:

\usetypescriptfile[type-win]
\starttypescript [winfonts]
 \definetypeface [winfonts] [rm] [serif] [times]   [default]
 \definetypeface [winfonts] [ss] [sans]  [arial]   [default]
 \definetypeface [winfonts] [tt] [mono]  [courier] [default]
 \definetypeface [winfonts] [mm] [math]  [times]   [default]
\stoptypescript
\usetypescript[winfonts]
\setupbodyfont[winfonts,10pt]