USB Card Problem... UHBD.SYS ---more info inside: 1

Hey all, I'm working on a computer for someone. They dont have a USB port on thier computer, so i installed a USB Card... it came with no software drivers, simple plug and play using windows drivers i guess.. at any rate, windows detects the card, but when copying files, it couldnt find UHCD.SYS (which i've gotten in there,) but then it also couldnt find UHBD.SYS which i cant find anywhere... it says to insert the WINDOWS 98 SECCOND EDITION CD, which she says was never given to her. I have a windows 98 regular version CD... would the files be on there? I've done a search for the uhcd.sys file on it, and the uhbd.sys file on it... neither show up... but i can swear that i've had to copy those files on my own computer, and the WIN98 cd i have worked.. Problem is, she lives very far away, and i dont want to make too many trips ... Could someone please help me figure out where these files are? thanks!