creating a com port

Recently I had to reformat the hard disk on my son's PC running Win98.
I re-installed windows and all was well except for the internal modem which is a PnP Rockwell K56 Flex. This worked previously. I believe that the jumper is set to port 4. The computer now only recognises Ports 1 & 2. Plug and play does not install the modem. Do I have to edit the BIOS?
I would welcome any suggestions as I have tried the usual ways to create COM Port 4.
Bob Scott
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Set jumper to COM2 !
If you want to create another port, go to Add New Hardware Wizard, choose "No, I want...." Choose Ports (COM & LPT) -> Communication Port ->>>> Finish.
It can be COM3, don't worry, repeat and you 'll have COM4.
If the computer doesn't install Modem, try remove all ports in Device Manager, then disable COM2 in BIOS.

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