So here is how this works. I am going to give you a link to the blog that gave the information to me for how to do this so you can see it yourself.
There is a hidden folder called the appdata folder in Windows and it stores data for most programs that are run. If you have not changed the settings for Windows to show hidden files here is how to do it, and I should preface that I am basing this off a pre release version of Windows 8 so it is possible that your version is slightly different, let me know if things are different than I am describing. I will also use folder paths in the form of C:\Windows\System32. If you are not familiar with what that means, A short explanation is that the first part, c:\, designates the C drive. The Windows\ part means the Windows folder on the root of the C drive. The System32 means the System32 folder inside the Windows folder. So you just follow the path structure from left to right from the root of the drive through the folders to the end. It will always be in context so if you understand that part, the rest around it I will always be explaining for you.
Now the steps... First you need to download a little program that will be able to read the file you are going to be needing access to. It is called EseDbViewer and is available here at the bottom of the page under download (just click the number). It is an installer so go ahead and run it and follow through the installation steps. It is a standard Windows program installation process and nothing in particular you need to watch for.
Next, go to the Desktop and open a file/folder viewer window (or Windows Explorer from the Start screen). Go to the View tab at the top and then click on Options. In the Folder Options box click on the View tab and then in the Advanced settings box about the 6th option should be Hidden files and folders with a couple options under it. Check "Show hidden files, folders, or drives" and click apply and ok.
Now open EseDBViewer and click on the open icon and and then click the ... button to the right of the "ESE file" input box. This will bring up a file browser window to select the file you want to open. Go to the following folder location: C:\Users\\appdata\local\microsoft\windows\webcache. If the folder does not exist or you cannot find it, let me know.
This is the first set of steps. I am posting these so you can see them and follow them and ask any questions while I continue with the rest of the steps.