Hi XiaoBin
Getting a modem to work in an older system can indeed take some doing.
You mention that you were in Device Manager & had some trouble there? Did you disable or remove any devices?
Tell you what = this might be your easiest plan:
1) Boot into Safe Mode (start tapping the F8 key as the computer starts)
2) Go back into Device Manager, and remove any devices with yellow exclamation points or red Xs. Remove any modems or networking devices.
3) Go into the Network applet in Control Panel, and remove any networking you see there.
4) Go to Add/Remove Software in the Control Panel, and remove any software relating to networking or modems.
5) While still in Add/Remove Software -- go to the Windows Setup tab: and from the Communications group, remove the checkmark from the box for Dial-up Networking.
6) Reboot - cancelling any New Hardware Found screens.
7) Go to Add/Remove Software in the Control Panel --- go to the Windows Setup tab: and in the Communications group, place the checkmark into the box for Dialup Networking = insert your Windows 98se installaton CD when prompted.
8) Reboot - cancelling any New Hardware Found screens.
9) Run the proprietary installation setup for your network card, as provided by the manufacturer (will likely require both the Win98se CD and a reboot).
10) Run the proprietary installaton setup for your modem card, as provided by the manufacturer (make sure you've got an exact-match driver - and follow the instructions exactly = especially if the modem is a "Winmodem" [relies on a software controller rather than a chip-based hardware controller])
That should do it: the files that you are seeing in your error messages are all Networking files for Windows.
Best of luck
. . . Gary
[P.S. ... I'm a little puzzled by your reference to your Windows 98 2nd Edition CD. As long as that CD is a retail version, it should be superior to any Windows 98 original CD = a great many more drivers are included, as well as many updated portions of the operating system itself. If your Win98se disk is the CD that is meant only to upgrade Win98original-to-Win98se -- (a fairly rare disk) -- then I'm curious as to what procedure you are using while reinstalling]
Getting a modem to work in an older system can indeed take some doing.
You mention that you were in Device Manager & had some trouble there? Did you disable or remove any devices?
Tell you what = this might be your easiest plan:
1) Boot into Safe Mode (start tapping the F8 key as the computer starts)
2) Go back into Device Manager, and remove any devices with yellow exclamation points or red Xs. Remove any modems or networking devices.
3) Go into the Network applet in Control Panel, and remove any networking you see there.
4) Go to Add/Remove Software in the Control Panel, and remove any software relating to networking or modems.
5) While still in Add/Remove Software -- go to the Windows Setup tab: and from the Communications group, remove the checkmark from the box for Dial-up Networking.
6) Reboot - cancelling any New Hardware Found screens.
7) Go to Add/Remove Software in the Control Panel --- go to the Windows Setup tab: and in the Communications group, place the checkmark into the box for Dialup Networking = insert your Windows 98se installaton CD when prompted.
8) Reboot - cancelling any New Hardware Found screens.
9) Run the proprietary installation setup for your network card, as provided by the manufacturer (will likely require both the Win98se CD and a reboot).
10) Run the proprietary installaton setup for your modem card, as provided by the manufacturer (make sure you've got an exact-match driver - and follow the instructions exactly = especially if the modem is a "Winmodem" [relies on a software controller rather than a chip-based hardware controller])
That should do it: the files that you are seeing in your error messages are all Networking files for Windows.
Best of luck
. . . Gary
[P.S. ... I'm a little puzzled by your reference to your Windows 98 2nd Edition CD. As long as that CD is a retail version, it should be superior to any Windows 98 original CD = a great many more drivers are included, as well as many updated portions of the operating system itself. If your Win98se disk is the CD that is meant only to upgrade Win98original-to-Win98se -- (a fairly rare disk) -- then I'm curious as to what procedure you are using while reinstalling]
ray: 
