Does this mean you still need help or are you comfortable figuring this out yourself? Be clear. You also could have posted this under the already opened thread without problems, no need to open a new thread.
If no, good luck!, if yes procede to read http://www.linuxdoc.org/HOWTO/Linmodem-HOWTO.html
from point 3 on and post the necessary info here which minimally is:
- the chipset type in full (better more than less info I'd say) and
- c:\windows\modem.log and
- the module you think may work with this chipset, as you found it at http://www.idir.net/~gromitkc/winmodem.html#drivers