First, you posted a link to your own hard drive, lol. But I was able to find the course at the MIT website you downloaded. I assume you unzipped ALL the files from that zip into one folder on your hard drive, right?

I unzipped all files to a folder on my drive. When you open that folder, you'll see a folder and an xml file. Click on the sub-folder named "14-01Fall-2007". Now, click on the "Welcome.htm" file. It will open up a local web page on your pc from MIT.

Look on the left of the page. You'll see some links. All the PDF files you need for the course are found by clicking on the "Lecture Notes" link. Don't worry about the xml files.