You could try this. I really don't know if it will cure this problem but it's worth a try.
Firstly, backup your registry. Then got to START, RUN, and type REGEDIT. Double click HKEY_LOCAL_MACHINE, below it you will see a subsection called Enum, double click it to expand it. Do the same to the one marked PCI, you should now see some keys marked VEN_*******, expand each one and below it you will see another key marked BUS_******. Expand that key and each one will show you a name and data in the right-hand pane. One of those is your modem and the name will be clear. Now delete the key marked BUS_*******. Reboot, and Win98 will install your modem
I hope it works.
Regards
Phil
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