I am trying to get online and now the computer is not detecting the modem. I have a Dell Dimension DIM4300S, Pentium(R) 4 CPU. System is Microsoft Windows XP 2002. I have check the Device Manager and there is not a modem listed. I have checked the Phone and Modem options and in the Modems tab there is a modem listed, but reads not present. The computer has been on line before and I believe it has a virus. This is not my computer, but a co-worker so I'm not sure of too much history. Any information would be great. Thanks.

Try using another PCI slot as the first few are on the lower COM ports (1 & 2) if its a five slot machine use slot 4 or 5 if its a three slot use slot 3 as these are on com ports 3 4 & 5 and do not have clashes with other com devices