1. This obviously were the more careless and destructively oriendted cable people. I've had cable, adsl and dial-up all happy together on the same Windows 95 and Windows 98 machine. In fact, still using dial-up sometimes if having problems with adsl.
2. You're not very informative on what you do ('hook up to') and on the message you get, and the missing files, which makes it impossible to tell you if you can patch it somehow (which is doubtful).
3. On my Compaq (older) which has the same 'system replace type thing' as yours, the original Windows cabs are in c:\windows\cabs, and you can browse to that when being asked for the CD. This might work. But you complicated things a little bit by upgrading and losing the CD, which - of course - is a very bad idea.
4. Best to do, in my opinion: visit eBay and buy a Windows 98 SE upgrade or full install. And let your daughter pay for it!
I loaned my computer to my daughter. It had been on a dial up hook up. She put it on a cable hook up. When the cable people hooked her up they did something to the computer so it would hook up to cable. I got back my computer and tried to hook up to dial up. I dont know how to refigure the settings. I get a message that some files are missing and for me to put in my Windows disc so the files can be put on the computer. I am running Windows 98FE with a Windows 98 SE add on. The computer is a Compacq with 333 Celeron. My daughter lost my SE add on disc and my Compacq disc is a complete system replace type thing. Can I just adjust something on the computer to make it work? I hate to lose my 98SE add on. JB