'System Vault', and 'Version Liar'

System Vault

Provides privacy by enabling only authorized access to any file or folder. It does this by hiding files and folders, which can be accessed only upon entering a password. In addition to hiding files and folders it also gives a user the option of clearing common MRU (Most Recently Used) lists.

http://www.luqsoft.com/systemvault/

Version Liar

Version Liar does just that, telling lies about the version of Windows to other software. It will tell the other software it is running under Windows XP SP8.

http://dragondarka.free.fr/smarmotte/index.php?downloads/