|I understand your trying, but it's still not clear what you really need. Here is what is confusing to those trying to help you:|
1) "...already have a modem card..." is understood to mean you have a PCMCIA or PC card modem that is already set up and working on the laptop. Is this a regular telephone modem which plugs into a conventional telephone outlet? If so, then the laptop can only connect to the Internet with this modem by being connected directly to a telephone line.
2) "...internet service provider im on is a lead that has a usb in which has to connect to the modem card but the card hasnt got usb on it at all..." Are you saying that you have Broadband ISP service which provides a USB connection to connect to, OR do you have a "dial-up" ISP and your using a USB modem to connect to the service? These PCMCIA or PC cards which plug into the side of the laptop are designed to do specific things. If the IBM 380e currently has a "modem card", then that is all it does. There are PC cards which provide USB ports, but you would remove the modem card and insert the USB card instead. You CAN NOT connect USB to a telephone modem card, it simply doesn't work that way.
3) "...i want the 380e connected to a internet by a phone lead which i have internet already..." This statement implies to someone reading it that what you have is a USB telephone modem which you are using to connect your computer to your dial-up ISP service and you want to be able to connect your mother's IBM laptop using this same USB modem. If that is the case, then the correct way to connect your mother's laptop is to unplug the USB modem from the telephone connection, and plug the PC card modem from her laptop directly into the telephone connection and use the PC card modem to dial up your ISP service.
IF what you are wanting to do is somehow have BOTH your computer and your mother's laptop connected to your dial-up ISP service at the same time, you can't do that. Your USB modem can only be connected to a single computer. What may be possible is to configure your computer for something called Internet Connection Sharing (ICS) where your computer would be connected to your ISP service and your mother's laptop would be connected to your computer and accessing the Internet through your computer. But, this is complicated to do and would require you to study and learn how to do it.