Ok, I'll just skip the FsUsbExDisk.SYS stuff? I'll go back to it later and see what it's associated with - how would I check to see what content provided it? And by removing it, you mean the driver files, or the content itself?
The webcam drivers: I tried all three download options for that file, both download, extract, and then when I run them, a few popups appear, the 2nd being an error message. They're attached to the message if you'd like to see them; don't think they're of much use though.