how do i install photoshop elements 11 without a disk drive

I own photoshop elements 11 and have the disk but my new laptop doesn't have a disk drive. I found the software here http://helpx.adobe.com/photoshop-elements/kb/photoshop-elements-10-11-downloads.html. I downloaded the content but it wont install. The application says I need to download the rest of the content to install.  The thing is I have downloaded the rest of the content.  I am not sure what to do.  The first large file comes in a 7z file format. I have extracted the files to see if thats what I needed to do and it still didn't work.  I do need some help with this. The operating system is windows 8.1, 6 GB of ram, AMD quad core processor.