>>>Do you know where on MS site I can download the NT4 option pack?
>>
>>http://www.microsoft.com/ntserver/nts/downloads/recommended/NT4OptPk/default.asp
>
>Do I need that service pack only to get PWS and MTS?
>
>I have W98 and I installed PWS so MTS installed in the same process.
>
>Is that enough?

If I remember correctly (it's been a while since I installed on Win9x), MTS installs with PWS.