Hi,
Show hidden files
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* Click Start.
* Open My Computer.
* Select the Tools menu and click Folder Options.
* Select the View Tab.
* Under the Hidden files and folders heading select Show hidden files and folders.
* Uncheck the Hide protected operating system files (recommended) option.
* Click Yes to confirm.
* Click OK.
See if you're able to see the folder now.
Since you use Adobe Acrobat for conversion only then I recommend to replace it with a free alternative. You'll find a list of alternatives here.
Please try RevoUninstaller to take care of Macromedia Flash Player 8.