You'll find drivers for your hardware on the manufacturers site, generally. Or on the diskettes and cd's that came with the hardware and that, of course, you carefully stored.
You'll find all necessary Windows files on the Windows CD, that came with your computer. There's no download site for all of those. Some dll's may be found on the net, however.
On line scan's: housecall and panda. Links are in http://reviews.cnet.com/5208-6121-0.html?forumID=45&threadID=63537&messageID=754770&tag=
I'm looking for the proper search terminology to find sites that will scan and fix -- or, at least, suggest other sites where I can download the drivers and files that were nixed by pathetic viruses. I hope that I am being understandable. Also, I would appreciate any known sites whereby I might have my computer scanned and asessed. I am having major trouble and cannot access Windows System Programs. XP Pro, Compaq. Thanks in advance.