Ok, its not a duel modem or anything. It is a simple ISA v90 modem. I have the same thing (I got the v90 flash right when it came out)...
Is your modem in PnP or Legacy mode? Mine is in Legacy mode (works in Linux!). I suggest putting it in legacy mode... I dont know where you got those weird instructions, or why you thought they were for your modem.
Just tell Win2k to add a modem,
"Internal 56K Faxmodem (PnP)" should do fine..
I have drivers for it (just an INF file since it is a good old hardware modem).. it lists it as a "Zoom 56k". Very simple.
I run the modem in 33.6 mode, becaus 56k isnt too reliable for online gaming - which takes up 80% of my internet time at home.
e-mail me at xenomatrix AT hotmail.com if you have any questions.
------------------
http://xenomorph.net