My Windows 98 SE couldn't find certain files (exts. .sys, and .dll, others, about a dozen in all) when I was trying to install a cable modem. I don't have a Windows 98 CD--never did, as it was factory-installed. The only Windows 98 CD I have is for "PCs without Windows", and I couldn't find the required files there. How do I get these files and why aren't they on my hard drive?