I have fixed a same problem for client. the problem was the modem power adapter,
if you had a ext modem before, just make sure you ain't using the old adapter
for new modem or to check the adapter to see if it can provide enough power for
modem. In my client case, he was using a old 500ma adapter for his new modem,
but his new modem requires 1000ma.

I don't know if this is suit for your case but hope it helps.

J Qian

"W.D.Duck McDonald" wrote:

> Hello,
>
> OVERVIEW:
> I recently installed a new motherboard and internal modem in my
> homebuilt PC.
>
> Old system was a SuperMicro P5STE mobo w/Cyrix 166+ cpu.
> Old modem was a Diamond Supra 33.6Kbps Faxmodem (external on
> com 2)
>
> New system is a TXPro MMX Pentium mother board with and AMD K6-2
> 300MHz cpu.  This mother board can be seen at:
> <http://www.cponly.com/txproii.html>.
> The new modem is and internal Creative Modem Blaster 56K v.90.
>
> PROBLEM:
> I want to remove the internal modem and install an external modem on
> COM2.  I cannot get the New system to detect an external modem.