Have you expanded the Users folder Anne. I've highlighted it in your screen shot. Alternatively have you checked that it's not a hidden file.
Click Control Panel
Click Folder Options
Click the View tab
Click Show hidden files and folders
If you want to see system files as well, unclick Hide protected operating
system files (Recommended)
Click OK
I think that's how it works in Vista but I'm not sure as I only ever used it briefly on my hubby's laptop.